Finding the Fourth Proportional to 8,913.31, 12,301.72 and 5,137.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,913.31 : 12,301.72 = 5,137.04 : x
2. Step 2: Convert to fraction form
   8,913.31/12,301.72 = 5,137.04/x
3. Step 3: Cross multiply
   8,913.31x = 12,301.72 × 5,137.04
4. Step 4: Simplify right side
   8,913.31x = 63,194,340.52
5. Step 5: Solve for x
   x = 63,194,340.52/8,913.31
6. Step 6: Final answer
   x = 7,089.88