Finding the Fourth Proportional to 8,452.88, 12,690.82 and 4,757.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,452.88 : 12,690.82 = 4,757.72 : x
2. Step 2: Convert to fraction form
   8,452.88/12,690.82 = 4,757.72/x
3. Step 3: Cross multiply
   8,452.88x = 12,690.82 × 4,757.72
4. Step 4: Simplify right side
   8,452.88x = 60,379,368.13
5. Step 5: Solve for x
   x = 60,379,368.13/8,452.88
6. Step 6: Final answer
   x = 7,143.05