Finding the Fourth Proportional to 12,454.42, 18,671.85 and 8,495.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,454.42 : 18,671.85 = 8,495.86 : x
2. Step 2: Convert to fraction form
   12,454.42/18,671.85 = 8,495.86/x
3. Step 3: Cross multiply
   12,454.42x = 18,671.85 × 8,495.86
4. Step 4: Simplify right side
   12,454.42x = 158,633,423.54
5. Step 5: Solve for x
   x = 158,633,423.54/12,454.42
6. Step 6: Final answer
   x = 12,737.12