An investment fund of $10,000 is made into a fund at time t = 0. The fund develops the following balances over the next 4 years: t A(t) 0 10,000 1 10,400 2 10,800 3 11,550 4 12,150 If $7,000 in invested at time t = 2, under the same interest environment, find the accumulated value of $7,000 at time t = 4. (Round your answer to the nearest dollar.)