Finding the Fourth Proportional to 23,150.60, 31,947.71 and 12,540.25

Step by Step Solution

1. Step 1: Write the proportion equation
   23,150.60 : 31,947.71 = 12,540.25 : x
2. Step 2: Convert to fraction form
   23,150.60/31,947.71 = 12,540.25/x
3. Step 3: Cross multiply
   23,150.60x = 31,947.71 × 12,540.25
4. Step 4: Simplify right side
   23,150.60x = 400,632,221.81
5. Step 5: Solve for x
   x = 400,632,221.81/23,150.60
6. Step 6: Final answer
   x = 17,305.48