Finding the Fourth Proportional to 8,428.57, 12,632.61 and 5,964.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,428.57 : 12,632.61 = 5,964.10 : x
2. Step 2: Convert to fraction form
   8,428.57/12,632.61 = 5,964.10/x
3. Step 3: Cross multiply
   8,428.57x = 12,632.61 × 5,964.10
4. Step 4: Simplify right side
   8,428.57x = 75,342,149.30
5. Step 5: Solve for x
   x = 75,342,149.30/8,428.57
6. Step 6: Final answer
   x = 8,938.90