[latex]1 \% = \frac{1}{100}\\ \\x \cdot 10 \% = 47.8 \\ \\ x \cdot \not10^{1}\cdot \frac{1}{\not100^{10}}=47.8\\ \\x \cdot \frac{1}{10}=47.8 \ \ /*10 \\ \\ x \cdot \frac{1}{\not10^{1}}\cdot \not10^{1}=47.8 \cdot 10 \\ \\x =478 [/latex]

very simple the answer is 478 to get there you know that 47.8 is 10% of something that something has to equal 100% so 10%x10= 100% 47.8x10=478