It's a geometric sequence with first term = a1=27200, and since
a decrease of 2% each year means that each year it is only 98% of
what it was the year before.

So:
 
the 2nd yesr it'll be worth (0.98)(27200) = $26656.00
the 3rd yesr it'll be worth (0.98)2($27200) = $26656.00
the 4th yesr it'll be worth (0.98)3($27200) = $26122.88
...

So

the nth yesr it'll be worth (0.98)n-1($27200)

a1 = the first term
a2 = the second term
...
an = the nth term



You want the 10th term.







Round to $22678

Edwin