[tex] \frac{24}{13} = \frac{x}{39} [/tex]
We move 39 to multiply 24/13.
[tex] \frac{24}{13} (39) = x \\ 24(3) = x \\ 72 = x[/tex]
Substitute x = 72 in the equation.
[tex] \frac{24}{13} = \frac{72}{39} \\ \frac{24}{13} = \frac{24}{13} [/tex]
The equation is true for x = 72.
[tex] \large \boxed {x = 72}[/tex]