Finding the Fourth Proportional to 8,662.52, 12,992.34 and 3,114.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.52 : 12,992.34 = 3,114.74 : x
2. Step 2: Convert to fraction form
   8,662.52/12,992.34 = 3,114.74/x
3. Step 3: Cross multiply
   8,662.52x = 12,992.34 × 3,114.74
4. Step 4: Simplify right side
   8,662.52x = 40,467,761.09
5. Step 5: Solve for x
   x = 40,467,761.09/8,662.52
6. Step 6: Final answer
   x = 4,671.59