Yes, you can link as many Adsense accounts to a single Analytics (domain). I haven't needed to do this in a while & it's possible things can change. When I setup my sites (Adsense + Analytics) they're basically setup like sub-domains inside Google Analytics, very confusing the first time you have to setup a 2nd+ Adsense site for tracking. I'm not saying your actual site needs to be a sub-domain, just that's what the Google Analytics pages resemble.

Example:

• Google Analytics
  • 1st domain
    • 2nd domain
    • 3rd domain
    • 4th domain
    • etc...

Like I said it's very confusing at first. Once you setup the Adsense + Analytics tracking for the 2nd site, the rest of the sites are setup the exact same way as the 2nd domain, only they'll have a slight change in the tracking ID number.

Here's an example of the tracking ID numbers changing, only the last part will change.

• Google Analytics
  • 1st domain = UA-12345678-
    • 2nd domain = UA-12345678-
    • 3rd domain = UA-12345678-
    • 4th domain = UA-12345678-
    • etc...

Once you figure out how to setup the sites in Analytics the data is way better than the default Adsense Admin data since you can drill down to individual web pages & know which pages are your money makers per domain. I can look back on my sites for an entire year & view the highest earning pages on any of my domains which can be very useful for knowing which exact subjects are better performers when creating new content.