Finding the Fourth Proportional to 5,262.92, 7,262.72 and 2,872.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,262.92 : 7,262.72 = 2,872.78 : x
2. Step 2: Convert to fraction form
   5,262.92/7,262.72 = 2,872.78/x
3. Step 3: Cross multiply
   5,262.92x = 7,262.72 × 2,872.78
4. Step 4: Simplify right side
   5,262.92x = 20,864,196.76
5. Step 5: Solve for x
   x = 20,864,196.76/5,262.92
6. Step 6: Final answer
   x = 3,964.38