Finding the Fourth Proportional to 23,150.34, 31,947.48 and 12,540

Step by Step Solution

1. Step 1: Write the proportion equation
   23,150.34 : 31,947.48 = 12,540 : x
2. Step 2: Convert to fraction form
   23,150.34/31,947.48 = 12,540/x
3. Step 3: Cross multiply
   23,150.34x = 31,947.48 × 12,540
4. Step 4: Simplify right side
   23,150.34x = 400,621,399.20
5. Step 5: Solve for x
   x = 400,621,399.20/23,150.34
6. Step 6: Final answer
   x = 17,305.21