To calculate 30% of 50.88, you can use the following formula:
\[ \text{Percentage} = \text{Base Number} \times \left(\frac{\text{Percent}}{100}\right) \]
So, for 30% of 50.88:
\[ 30% \text{ of } 50.88 = 50.88 \times \left(\frac{30}{100}\right) = 50.88 \times 0.30 = 15.264 \]
Therefore, 30% of 50.88 is 15.264.