Finding the Fourth Proportional to 13,088.72, 19,641.40 and 4,767.92

Step by Step Solution

1. Step 1: Write the proportion equation
   13,088.72 : 19,641.40 = 4,767.92 : x
2. Step 2: Convert to fraction form
   13,088.72/19,641.40 = 4,767.92/x
3. Step 3: Cross multiply
   13,088.72x = 19,641.40 × 4,767.92
4. Step 4: Simplify right side
   13,088.72x = 93,648,623.89
5. Step 5: Solve for x
   x = 93,648,623.89/13,088.72
6. Step 6: Final answer
   x = 7,154.91