Finding the Fourth Proportional to 7,128.43, 10,688.83 and 2,382.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,128.43 : 10,688.83 = 2,382.50 : x
2. Step 2: Convert to fraction form
   7,128.43/10,688.83 = 2,382.50/x
3. Step 3: Cross multiply
   7,128.43x = 10,688.83 × 2,382.50
4. Step 4: Simplify right side
   7,128.43x = 25,466,158.24
5. Step 5: Solve for x
   x = 25,466,158.24/7,128.43
6. Step 6: Final answer
   x = 3,572.48