Finding the Fourth Proportional to 8,755.61, 12,082.25 and 4,978.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,755.61 : 12,082.25 = 4,978.24 : x
2. Step 2: Convert to fraction form
   8,755.61/12,082.25 = 4,978.24/x
3. Step 3: Cross multiply
   8,755.61x = 12,082.25 × 4,978.24
4. Step 4: Simplify right side
   8,755.61x = 60,148,254.94
5. Step 5: Solve for x
   x = 60,148,254.94/8,755.61
6. Step 6: Final answer
   x = 6,869.69