Finding the Fourth Proportional to 5,792.47, 7,993.60 and 3,139.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,792.47 : 7,993.60 = 3,139.86 : x
2. Step 2: Convert to fraction form
   5,792.47/7,993.60 = 3,139.86/x
3. Step 3: Cross multiply
   5,792.47x = 7,993.60 × 3,139.86
4. Step 4: Simplify right side
   5,792.47x = 25,098,784.90
5. Step 5: Solve for x
   x = 25,098,784.90/5,792.47
6. Step 6: Final answer
   x = 4,333.00