Finding the Fourth Proportional to 5,153.55, 7,111.78 and 2,915.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,153.55 : 7,111.78 = 2,915.52 : x
2. Step 2: Convert to fraction form
   5,153.55/7,111.78 = 2,915.52/x
3. Step 3: Cross multiply
   5,153.55x = 7,111.78 × 2,915.52
4. Step 4: Simplify right side
   5,153.55x = 20,734,536.83
5. Step 5: Solve for x
   x = 20,734,536.83/5,153.55
6. Step 6: Final answer
   x = 4,023.35