Finding the Fourth Proportional to 9,421.57, 14,115.72 and 5,716.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,421.57 : 14,115.72 = 5,716.27 : x
2. Step 2: Convert to fraction form
   9,421.57/14,115.72 = 5,716.27/x
3. Step 3: Cross multiply
   9,421.57x = 14,115.72 × 5,716.27
4. Step 4: Simplify right side
   9,421.57x = 80,689,273.69
5. Step 5: Solve for x
   x = 80,689,273.69/9,421.57
6. Step 6: Final answer
   x = 8,564.32