Finding the Fourth Proportional to 13,061.20, 18,024.04 and 7,472.08

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.20 : 18,024.04 = 7,472.08 : x
2. Step 2: Convert to fraction form
   13,061.20/18,024.04 = 7,472.08/x
3. Step 3: Cross multiply
   13,061.20x = 18,024.04 × 7,472.08
4. Step 4: Simplify right side
   13,061.20x = 134,677,068.80
5. Step 5: Solve for x
   x = 134,677,068.80/13,061.20
6. Step 6: Final answer
   x = 10,311.23