Finding the Fourth Proportional to 8,758.55, 12,086.79 and 5,614.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758.55 : 12,086.79 = 5,614.74 : x
2. Step 2: Convert to fraction form
   8,758.55/12,086.79 = 5,614.74/x
3. Step 3: Cross multiply
   8,758.55x = 12,086.79 × 5,614.74
4. Step 4: Simplify right side
   8,758.55x = 67,864,183.28
5. Step 5: Solve for x
   x = 67,864,183.28/8,758.55
6. Step 6: Final answer
   x = 7,748.34