Finding the Fourth Proportional to 6,722.78, 10,085.98 and 5,987.43

Step by Step Solution

1. Step 1: Write the proportion equation
   6,722.78 : 10,085.98 = 5,987.43 : x
2. Step 2: Convert to fraction form
   6,722.78/10,085.98 = 5,987.43/x
3. Step 3: Cross multiply
   6,722.78x = 10,085.98 × 5,987.43
4. Step 4: Simplify right side
   6,722.78x = 60,389,104.85
5. Step 5: Solve for x
   x = 60,389,104.85/6,722.78
6. Step 6: Final answer
   x = 8,982.75