Finding the Fourth Proportional to 13,385.31, 18,471.10 and 7,335.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,385.31 : 18,471.10 = 7,335.52 : x
2. Step 2: Convert to fraction form
   13,385.31/18,471.10 = 7,335.52/x
3. Step 3: Cross multiply
   13,385.31x = 18,471.10 × 7,335.52
4. Step 4: Simplify right side
   13,385.31x = 135,495,123.47
5. Step 5: Solve for x
   x = 135,495,123.47/13,385.31
6. Step 6: Final answer
   x = 10,122.67