Finding the Fourth Proportional to 5,156.52, 7,116.08 and 2,798.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,156.52 : 7,116.08 = 2,798.72 : x
2. Step 2: Convert to fraction form
   5,156.52/7,116.08 = 2,798.72/x
3. Step 3: Cross multiply
   5,156.52x = 7,116.08 × 2,798.72
4. Step 4: Simplify right side
   5,156.52x = 19,915,915.42
5. Step 5: Solve for x
   x = 19,915,915.42/5,156.52
6. Step 6: Final answer
   x = 3,862.28