Finding the Fourth Proportional to 8,757.42, 12,085.41 and 4,778.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,757.42 : 12,085.41 = 4,778.58 : x
2. Step 2: Convert to fraction form
   8,757.42/12,085.41 = 4,778.58/x
3. Step 3: Cross multiply
   8,757.42x = 12,085.41 × 4,778.58
4. Step 4: Simplify right side
   8,757.42x = 57,751,098.52
5. Step 5: Solve for x
   x = 57,751,098.52/8,757.42
6. Step 6: Final answer
   x = 6,594.53