Finding the Fourth Proportional to 5,153.31, 7,112 and 2,915.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,153.31 : 7,112 = 2,915.59 : x
2. Step 2: Convert to fraction form
   5,153.31/7,112 = 2,915.59/x
3. Step 3: Cross multiply
   5,153.31x = 7,112 × 2,915.59
4. Step 4: Simplify right side
   5,153.31x = 20,735,640.52
5. Step 5: Solve for x
   x = 20,735,640.52/5,153.31
6. Step 6: Final answer
   x = 4,023.75