Finding the Fourth Proportional to 23,156.88, 31,956.48 and 12,546.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,156.88 : 31,956.48 = 12,546.72 : x
2. Step 2: Convert to fraction form
   23,156.88/31,956.48 = 12,546.72/x
3. Step 3: Cross multiply
   23,156.88x = 31,956.48 × 12,546.72
4. Step 4: Simplify right side
   23,156.88x = 400,949,006.75
5. Step 5: Solve for x
   x = 400,949,006.75/23,156.88
6. Step 6: Final answer
   x = 17,314.47