The future value A after t years will be

A = P (1 + (r/n))^ (n*t)

P = principal amount (the initial amount)

r = annual rate of interest (as a decimal)

t = number of years the amount is deposited or borrowed for

A = amount of money accumulated after n years, including interest.

n = number of times the interest is compounded per year

In our case we have

P = $5,000

t = 5 years

r = 25% = 0.25

n = 4 times per year (quarterly )

A = 5000 * (1 + (0.25/4))^(4*5)

A = 5000 * (1 + (0.25/4))^20

A = $ 16,809.27 approximately.