Finding the Fourth Proportional to 23,156.91, 31,956.72 and 12,546.63

Step by Step Solution

1. Step 1: Write the proportion equation
   23,156.91 : 31,956.72 = 12,546.63 : x
2. Step 2: Convert to fraction form
   23,156.91/31,956.72 = 12,546.63/x
3. Step 3: Cross multiply
   23,156.91x = 31,956.72 × 12,546.63
4. Step 4: Simplify right side
   23,156.91x = 400,949,141.85
5. Step 5: Solve for x
   x = 400,949,141.85/23,156.91
6. Step 6: Final answer
   x = 17,314.45