Finding the Fourth Proportional to 5,393.76, 7,442.10 and 3,155.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,393.76 : 7,442.10 = 3,155.82 : x
2. Step 2: Convert to fraction form
   5,393.76/7,442.10 = 3,155.82/x
3. Step 3: Cross multiply
   5,393.76x = 7,442.10 × 3,155.82
4. Step 4: Simplify right side
   5,393.76x = 23,485,928.02
5. Step 5: Solve for x
   x = 23,485,928.02/5,393.76
6. Step 6: Final answer
   x = 4,354.28