Finding the Fourth Proportional to 9,123.30, 12,592.17 and 5,931.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.30 : 12,592.17 = 5,931.05 : x
2. Step 2: Convert to fraction form
   9,123.30/12,592.17 = 5,931.05/x
3. Step 3: Cross multiply
   9,123.30x = 12,592.17 × 5,931.05
4. Step 4: Simplify right side
   9,123.30x = 74,684,726.92
5. Step 5: Solve for x
   x = 74,684,726.92/9,123.30
6. Step 6: Final answer
   x = 8,186.15