Finding the Fourth Proportional to 5,391.39, 7,440.71 and 3,154.02

Step by Step Solution

1. Step 1: Write the proportion equation
   5,391.39 : 7,440.71 = 3,154.02 : x
2. Step 2: Convert to fraction form
   5,391.39/7,440.71 = 3,154.02/x
3. Step 3: Cross multiply
   5,391.39x = 7,440.71 × 3,154.02
4. Step 4: Simplify right side
   5,391.39x = 23,468,148.15
5. Step 5: Solve for x
   x = 23,468,148.15/5,391.39
6. Step 6: Final answer
   x = 4,352.89