Finding the Fourth Proportional to 5,382.56, 7,426.52 and 3,143.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,382.56 : 7,426.52 = 3,143.12 : x
2. Step 2: Convert to fraction form
   5,382.56/7,426.52 = 3,143.12/x
3. Step 3: Cross multiply
   5,382.56x = 7,426.52 × 3,143.12
4. Step 4: Simplify right side
   5,382.56x = 23,342,443.54
5. Step 5: Solve for x
   x = 23,342,443.54/5,382.56
6. Step 6: Final answer
   x = 4,336.68