Finding the Fourth Proportional to 2,647.74, 3,969.12 and 2,429.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647.74 : 3,969.12 = 2,429.04 : x
2. Step 2: Convert to fraction form
   2,647.74/3,969.12 = 2,429.04/x
3. Step 3: Cross multiply
   2,647.74x = 3,969.12 × 2,429.04
4. Step 4: Simplify right side
   2,647.74x = 9,641,151.24
5. Step 5: Solve for x
   x = 9,641,151.24/2,647.74
6. Step 6: Final answer
   x = 3,641.28