Finding the Fourth Proportional to 5,738.31, 7,915.12 and 4,142.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,738.31 : 7,915.12 = 4,142.34 : x
2. Step 2: Convert to fraction form
   5,738.31/7,915.12 = 4,142.34/x
3. Step 3: Cross multiply
   5,738.31x = 7,915.12 × 4,142.34
4. Step 4: Simplify right side
   5,738.31x = 32,787,107.82
5. Step 5: Solve for x
   x = 32,787,107.82/5,738.31
6. Step 6: Final answer
   x = 5,713.72