Finding the Fourth Proportional to 23,150.72, 31,947.98 and 12,540.32

Step by Step Solution

1. Step 1: Write the proportion equation
   23,150.72 : 31,947.98 = 12,540.32 : x
2. Step 2: Convert to fraction form
   23,150.72/31,947.98 = 12,540.32/x
3. Step 3: Cross multiply
   23,150.72x = 31,947.98 × 12,540.32
4. Step 4: Simplify right side
   23,150.72x = 400,637,892.55
5. Step 5: Solve for x
   x = 400,637,892.55/23,150.72
6. Step 6: Final answer
   x = 17,305.63