Finding the Fourth Proportional to 8,755.16, 12,081.83 and 4,978.13

Step by Step Solution

1. Step 1: Write the proportion equation
   8,755.16 : 12,081.83 = 4,978.13 : x
2. Step 2: Convert to fraction form
   8,755.16/12,081.83 = 4,978.13/x
3. Step 3: Cross multiply
   8,755.16x = 12,081.83 × 4,978.13
4. Step 4: Simplify right side
   8,755.16x = 60,144,835.08
5. Step 5: Solve for x
   x = 60,144,835.08/8,755.16
6. Step 6: Final answer
   x = 6,869.65