Finding the Fourth Proportional to 8,758.56, 12,086.79 and 4,779.68

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758.56 : 12,086.79 = 4,779.68 : x
2. Step 2: Convert to fraction form
   8,758.56/12,086.79 = 4,779.68/x
3. Step 3: Cross multiply
   8,758.56x = 12,086.79 × 4,779.68
4. Step 4: Simplify right side
   8,758.56x = 57,770,988.43
5. Step 5: Solve for x
   x = 57,770,988.43/8,758.56
6. Step 6: Final answer
   x = 6,595.95