Sheridan Service has a line of credit loan with the bank. The initial loan

balance was $$8000\mathrm{.}00.$ Payments of $$3000\mathrm{.}00$ and $$4000\mathrm{.}00$ were made

after five months and seven months respectively. At the end of one year,

Sheridan Service borrowed an additional $$4500\mathrm{.}00.$ Eleven months later, the

line of credit loan was converted into a collateral mortgage loan. What was

the amount of the mortgage loan if the line of credit interest was $8\%$

compounded monthly?