Finding the Fourth Proportional to 8,758.39, 12,086.83 and 4,779.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758.39 : 12,086.83 = 4,779.76 : x
2. Step 2: Convert to fraction form
   8,758.39/12,086.83 = 4,779.76/x
3. Step 3: Cross multiply
   8,758.39x = 12,086.83 × 4,779.76
4. Step 4: Simplify right side
   8,758.39x = 57,772,158.42
5. Step 5: Solve for x
   x = 57,772,158.42/8,758.39
6. Step 6: Final answer
   x = 6,596.21