Finding the Fourth Proportional to 8,757.71, 12,085.73 and 4,778.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,757.71 : 12,085.73 = 4,778.84 : x
2. Step 2: Convert to fraction form
   8,757.71/12,085.73 = 4,778.84/x
3. Step 3: Cross multiply
   8,757.71x = 12,085.73 × 4,778.84
4. Step 4: Simplify right side
   8,757.71x = 57,755,685.63
5. Step 5: Solve for x
   x = 57,755,685.63/8,757.71
6. Step 6: Final answer
   x = 6,594.84