Finding the Fourth Proportional to 5,256.72, 7,254.22 and 2,898.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,256.72 : 7,254.22 = 2,898.88 : x
2. Step 2: Convert to fraction form
   5,256.72/7,254.22 = 2,898.88/x
3. Step 3: Cross multiply
   5,256.72x = 7,254.22 × 2,898.88
4. Step 4: Simplify right side
   5,256.72x = 21,029,113.27
5. Step 5: Solve for x
   x = 21,029,113.27/5,256.72
6. Step 6: Final answer
   x = 4,000.42