Finding the Fourth Proportional to 11,061.72, 16,592.52 and 6,388.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,061.72 : 16,592.52 = 6,388.80 : x
2. Step 2: Convert to fraction form
   11,061.72/16,592.52 = 6,388.80/x
3. Step 3: Cross multiply
   11,061.72x = 16,592.52 × 6,388.80
4. Step 4: Simplify right side
   11,061.72x = 106,006,291.78
5. Step 5: Solve for x
   x = 106,006,291.78/11,061.72
6. Step 6: Final answer
   x = 9,583.17