Finding the Fourth Proportional to 13,385.52, 18,472.72 and 7,416.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,385.52 : 18,472.72 = 7,416.96 : x
2. Step 2: Convert to fraction form
   13,385.52/18,472.72 = 7,416.96/x
3. Step 3: Cross multiply
   13,385.52x = 18,472.72 × 7,416.96
4. Step 4: Simplify right side
   13,385.52x = 137,011,425.33
5. Step 5: Solve for x
   x = 137,011,425.33/13,385.52
6. Step 6: Final answer
   x = 10,235.79