Finding the Fourth Proportional to 8,755.76, 12,082.97 and 4,978.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,755.76 : 12,082.97 = 4,978.83 : x
2. Step 2: Convert to fraction form
   8,755.76/12,082.97 = 4,978.83/x
3. Step 3: Cross multiply
   8,755.76x = 12,082.97 × 4,978.83
4. Step 4: Simplify right side
   8,755.76x = 60,159,111.28
5. Step 5: Solve for x
   x = 60,159,111.28/8,755.76
6. Step 6: Final answer
   x = 6,870.80