X:13=17

To solve the equation \( X:13 = 17 \), we can rewrite it in fraction form:

\[ \frac{X}{13} = 17 \]

Next, we can solve for \( X \) by multiplying both sides of the equation by 13:

\[ X = 17 \times 13 \]

Now, calculate \( 17 \times 13 \):

\[ X = 221 \]

Therefore, the solution is:

\[ X = 221 \]