Finding the Fourth Proportional to 5,811.47, 8,019.61 and 3,158.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,811.47 : 8,019.61 = 3,158.82 : x
2. Step 2: Convert to fraction form
   5,811.47/8,019.61 = 3,158.82/x
3. Step 3: Cross multiply
   5,811.47x = 8,019.61 × 3,158.82
4. Step 4: Simplify right side
   5,811.47x = 25,332,504.46
5. Step 5: Solve for x
   x = 25,332,504.46/5,811.47
6. Step 6: Final answer
   x = 4,359.05