Finding the Fourth Proportional to 2,649.20, 3,952.06 and 2,649.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,649.20 : 3,952.06 = 2,649.20 : x
2. Step 2: Convert to fraction form
   2,649.20/3,952.06 = 2,649.20/x
3. Step 3: Cross multiply
   2,649.20x = 3,952.06 × 2,649.20
4. Step 4: Simplify right side
   2,649.20x = 10,469,797.35
5. Step 5: Solve for x
   x = 10,469,797.35/2,649.20
6. Step 6: Final answer
   x = 3,952.06