Finding the Fourth Proportional to 5,411.78, 8,111.14 and 2,634.29

Step by Step Solution

1. Step 1: Write the proportion equation
   5,411.78 : 8,111.14 = 2,634.29 : x
2. Step 2: Convert to fraction form
   5,411.78/8,111.14 = 2,634.29/x
3. Step 3: Cross multiply
   5,411.78x = 8,111.14 × 2,634.29
4. Step 4: Simplify right side
   5,411.78x = 21,367,041.26
5. Step 5: Solve for x
   x = 21,367,041.26/5,411.78
6. Step 6: Final answer
   x = 3,948.25