Finding the Fourth Proportional to 8,758.69, 12,086.99 and 5,614.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758.69 : 12,086.99 = 5,614.89 : x
2. Step 2: Convert to fraction form
   8,758.69/12,086.99 = 5,614.89/x
3. Step 3: Cross multiply
   8,758.69x = 12,086.99 × 5,614.89
4. Step 4: Simplify right side
   8,758.69x = 67,867,119.28
5. Step 5: Solve for x
   x = 67,867,119.28/8,758.69
6. Step 6: Final answer
   x = 7,748.55