Finding the Fourth Proportional to 23,150.10, 31,947.15 and 12,539.76

Step by Step Solution

1. Step 1: Write the proportion equation
   23,150.10 : 31,947.15 = 12,539.76 : x
2. Step 2: Convert to fraction form
   23,150.10/31,947.15 = 12,539.76/x
3. Step 3: Cross multiply
   23,150.10x = 31,947.15 × 12,539.76
4. Step 4: Simplify right side
   23,150.10x = 400,609,593.68
5. Step 5: Solve for x
   x = 400,609,593.68/23,150.10
6. Step 6: Final answer
   x = 17,304.88