Finding the Fourth Proportional to 8,758.68, 12,086.84 and 4,779.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758.68 : 12,086.84 = 4,779.72 : x
2. Step 2: Convert to fraction form
   8,758.68/12,086.84 = 4,779.72/x
3. Step 3: Cross multiply
   8,758.68x = 12,086.84 × 4,779.72
4. Step 4: Simplify right side
   8,758.68x = 57,771,710.88
5. Step 5: Solve for x
   x = 57,771,710.88/8,758.68
6. Step 6: Final answer
   x = 6,595.94