Finding the Fourth Proportional to 9,711.16, 14,567.72 and 3,866.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,711.16 : 14,567.72 = 3,866.40 : x
2. Step 2: Convert to fraction form
   9,711.16/14,567.72 = 3,866.40/x
3. Step 3: Cross multiply
   9,711.16x = 14,567.72 × 3,866.40
4. Step 4: Simplify right side
   9,711.16x = 56,324,632.61
5. Step 5: Solve for x
   x = 56,324,632.61/9,711.16
6. Step 6: Final answer
   x = 5,799.99