Finding the Fourth Proportional to 22,951.10, 31,671.60 and 12,881.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,951.10 : 31,671.60 = 12,881.72 : x
2. Step 2: Convert to fraction form
   22,951.10/31,671.60 = 12,881.72/x
3. Step 3: Cross multiply
   22,951.10x = 31,671.60 × 12,881.72
4. Step 4: Simplify right side
   22,951.10x = 407,984,683.15
5. Step 5: Solve for x
   x = 407,984,683.15/22,951.10
6. Step 6: Final answer
   x = 17,776.26