The equation A equals P equals quantity 1 plus 0.07 over 4 end quantity all raised to the power of 4 times t represents the amount of money earned on a compound interest savings account with an annual interest rate of 7% compounded quarterly. If after 15 years the amount in the account is $13,997.55, what is the value of the principal investment? Round the answer to the nearest hundredths place.

$13,059.12
$10,790.34
$9,054.59
$4,942.96