Finding the Fourth Proportional to 5,800.43, 8,004.56 and 3,147.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,800.43 : 8,004.56 = 3,147.78 : x
2. Step 2: Convert to fraction form
   5,800.43/8,004.56 = 3,147.78/x
3. Step 3: Cross multiply
   5,800.43x = 8,004.56 × 3,147.78
4. Step 4: Simplify right side
   5,800.43x = 25,196,608.15
5. Step 5: Solve for x
   x = 25,196,608.15/5,800.43
6. Step 6: Final answer
   x = 4,343.92