Finding the Fourth Proportional to 23,150.35, 31,947.37 and 12,540

Step by Step Solution

1. Step 1: Write the proportion equation
   23,150.35 : 31,947.37 = 12,540 : x
2. Step 2: Convert to fraction form
   23,150.35/31,947.37 = 12,540/x
3. Step 3: Cross multiply
   23,150.35x = 31,947.37 × 12,540
4. Step 4: Simplify right side
   23,150.35x = 400,619,957.10
5. Step 5: Solve for x
   x = 400,619,957.10/23,150.35
6. Step 6: Final answer
   x = 17,305.14