Finding the Fourth Proportional to 11,308.52, 15,592.20 and 10,685

Step by Step Solution

1. Step 1: Write the proportion equation
   11,308.52 : 15,592.20 = 10,685 : x
2. Step 2: Convert to fraction form
   11,308.52/15,592.20 = 10,685/x
3. Step 3: Cross multiply
   11,308.52x = 15,592.20 × 10,685
4. Step 4: Simplify right side
   11,308.52x = 166,602,657
5. Step 5: Solve for x
   x = 166,602,657/11,308.52
6. Step 6: Final answer
   x = 14,732.49