Finding the Fourth Proportional to 8,757.16, 12,084.82 and 4,778.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,757.16 : 12,084.82 = 4,778.28 : x
2. Step 2: Convert to fraction form
   8,757.16/12,084.82 = 4,778.28/x
3. Step 3: Cross multiply
   8,757.16x = 12,084.82 × 4,778.28
4. Step 4: Simplify right side
   8,757.16x = 57,744,653.71
5. Step 5: Solve for x
   x = 57,744,653.71/8,757.16
6. Step 6: Final answer
   x = 6,593.99