Finding the Fourth Proportional to 9,158.52, 12,638.70 and 4,966.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,158.52 : 12,638.70 = 4,966.76 : x
2. Step 2: Convert to fraction form
   9,158.52/12,638.70 = 4,966.76/x
3. Step 3: Cross multiply
   9,158.52x = 12,638.70 × 4,966.76
4. Step 4: Simplify right side
   9,158.52x = 62,773,389.61
5. Step 5: Solve for x
   x = 62,773,389.61/9,158.52
6. Step 6: Final answer
   x = 6,854.10