Finding the Fourth Proportional to 5,641.07, 8,456.74 and 2,721.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,641.07 : 8,456.74 = 2,721.42 : x
2. Step 2: Convert to fraction form
   5,641.07/8,456.74 = 2,721.42/x
3. Step 3: Cross multiply
   5,641.07x = 8,456.74 × 2,721.42
4. Step 4: Simplify right side
   5,641.07x = 23,014,334.57
5. Step 5: Solve for x
   x = 23,014,334.57/5,641.07
6. Step 6: Final answer
   x = 4,079.79