Finding the Fourth Proportional to 8,755.78, 12,082.48 and 4,979.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,755.78 : 12,082.48 = 4,979.86 : x
2. Step 2: Convert to fraction form
   8,755.78/12,082.48 = 4,979.86/x
3. Step 3: Cross multiply
   8,755.78x = 12,082.48 × 4,979.86
4. Step 4: Simplify right side
   8,755.78x = 60,169,003.75
5. Step 5: Solve for x
   x = 60,169,003.75/8,755.78
6. Step 6: Final answer
   x = 6,871.92