For the following exercise, use the compound interest formula, $A(t)=P\left(1+\frac{r}{n}\right)^{n t}$, where money is measured in dollars.
After a certain number of years, the value of an investment account is represented by the expression $10,900\left(1+\frac{0.04}{12}\right)^{120}$. What was the initial deposit made to the account? $\$$

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$\boxed{10,900}$ dollars is the final answer.

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Step 1 ：The problem is asking for the initial deposit made to the account. In the compound interest formula, the initial deposit is represented by P. In the given expression, the value of P is directly given as $10,900.

Step 2 ：Therefore, the initial deposit made to the account is $10,900.

Step 3 ：$\boxed{10,900}$ dollars is the final answer.

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