Finding the Fourth Proportional to 8,758.43, 12,086.41 and 4,779.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758.43 : 12,086.41 = 4,779.57 : x
2. Step 2: Convert to fraction form
   8,758.43/12,086.41 = 4,779.57/x
3. Step 3: Cross multiply
   8,758.43x = 12,086.41 × 4,779.57
4. Step 4: Simplify right side
   8,758.43x = 57,767,842.64
5. Step 5: Solve for x
   x = 57,767,842.64/8,758.43
6. Step 6: Final answer
   x = 6,595.68