Finding the Fourth Proportional to 8,702.89, 12,010.12 and 4,724.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,702.89 : 12,010.12 = 4,724.15 : x
2. Step 2: Convert to fraction form
   8,702.89/12,010.12 = 4,724.15/x
3. Step 3: Cross multiply
   8,702.89x = 12,010.12 × 4,724.15
4. Step 4: Simplify right side
   8,702.89x = 56,737,596.89
5. Step 5: Solve for x
   x = 56,737,596.89/8,702.89
6. Step 6: Final answer
   x = 6,519.39