If $f(x)=9 e^{x}$, find $f(5)$ rounded to the nearest tenth. Do not use a comma in your answer. Provide your answer below:

Step 1 ：Substitute \(x = 5\) into the function \(f(x) = 9e^x\).

Step 2 ：Calculate the result, which is approximately 1335.7184319231894.

Step 3 ：Round the result to the nearest tenth, which gives 1335.7.

Step 4 ：Final Answer: \(\boxed{1335.7}\)