Finding the Fourth Proportional to 5,156.72, 7,116.32 and 2,798.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,156.72 : 7,116.32 = 2,798.88 : x
2. Step 2: Convert to fraction form
   5,156.72/7,116.32 = 2,798.88/x
3. Step 3: Cross multiply
   5,156.72x = 7,116.32 × 2,798.88
4. Step 4: Simplify right side
   5,156.72x = 19,917,725.72
5. Step 5: Solve for x
   x = 19,917,725.72/5,156.72
6. Step 6: Final answer
   x = 3,862.48