Finding the Fourth Proportional to 2,629.90, 3,921.35 and 2,535.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,629.90 : 3,921.35 = 2,535.04 : x
2. Step 2: Convert to fraction form
   2,629.90/3,921.35 = 2,535.04/x
3. Step 3: Cross multiply
   2,629.90x = 3,921.35 × 2,535.04
4. Step 4: Simplify right side
   2,629.90x = 9,940,779.10
5. Step 5: Solve for x
   x = 9,940,779.10/2,629.90
6. Step 6: Final answer
   x = 3,779.91