Finding the Fourth Proportional to 8,755.67, 12,082.33 and 4,978.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,755.67 : 12,082.33 = 4,978.30 : x
2. Step 2: Convert to fraction form
   8,755.67/12,082.33 = 4,978.30/x
3. Step 3: Cross multiply
   8,755.67x = 12,082.33 × 4,978.30
4. Step 4: Simplify right side
   8,755.67x = 60,149,438.55
5. Step 5: Solve for x
   x = 60,149,438.55/8,755.67
6. Step 6: Final answer
   x = 6,869.77