Finding the Fourth Proportional to 5,104.78, 7,659.34 and 2,641.33

Step by Step Solution

1. Step 1: Write the proportion equation
   5,104.78 : 7,659.34 = 2,641.33 : x
2. Step 2: Convert to fraction form
   5,104.78/7,659.34 = 2,641.33/x
3. Step 3: Cross multiply
   5,104.78x = 7,659.34 × 2,641.33
4. Step 4: Simplify right side
   5,104.78x = 20,230,844.52
5. Step 5: Solve for x
   x = 20,230,844.52/5,104.78
6. Step 6: Final answer
   x = 3,963.12