Answer
$$2.32$$
Work Step by Step
Using the rules of logarithms, we find:
$$\ln \left(3^{4\log _{10}\left(x\right)}\right)=\ln \left(5\right) \\ 4\log _{10}\left(x\right)\ln \left(3\right)=\ln \left(5\right) \\ x=2.32$$
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