Finding the Fourth Proportional to 5,153.18, 7,111.76 and 2,915.29

Step by Step Solution

1. Step 1: Write the proportion equation
   5,153.18 : 7,111.76 = 2,915.29 : x
2. Step 2: Convert to fraction form
   5,153.18/7,111.76 = 2,915.29/x
3. Step 3: Cross multiply
   5,153.18x = 7,111.76 × 2,915.29
4. Step 4: Simplify right side
   5,153.18x = 20,732,810.45
5. Step 5: Solve for x
   x = 20,732,810.45/5,153.18
6. Step 6: Final answer
   x = 4,023.30