Finding the Fourth Proportional to 12,540.72, 18,801.36 and 5,957.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,540.72 : 18,801.36 = 5,957.04 : x
2. Step 2: Convert to fraction form
   12,540.72/18,801.36 = 5,957.04/x
3. Step 3: Cross multiply
   12,540.72x = 18,801.36 × 5,957.04
4. Step 4: Simplify right side
   12,540.72x = 112,000,453.57
5. Step 5: Solve for x
   x = 112,000,453.57/12,540.72
6. Step 6: Final answer
   x = 8,930.94