Finding the Fourth Proportional to 8,414.31, 12,607.51 and 5,117.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,414.31 : 12,607.51 = 5,117.43 : x
2. Step 2: Convert to fraction form
   8,414.31/12,607.51 = 5,117.43/x
3. Step 3: Cross multiply
   8,414.31x = 12,607.51 × 5,117.43
4. Step 4: Simplify right side
   8,414.31x = 64,518,049.90
5. Step 5: Solve for x
   x = 64,518,049.90/8,414.31
6. Step 6: Final answer
   x = 7,667.66