Finding the Fourth Proportional to 7,223.72, 9,959.76 and 6,086.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,223.72 : 9,959.76 = 6,086.48 : x
2. Step 2: Convert to fraction form
   7,223.72/9,959.76 = 6,086.48/x
3. Step 3: Cross multiply
   7,223.72x = 9,959.76 × 6,086.48
4. Step 4: Simplify right side
   7,223.72x = 60,619,830.25
5. Step 5: Solve for x
   x = 60,619,830.25/7,223.72
6. Step 6: Final answer
   x = 8,391.78