Finding the Fourth Proportional to 7,223.50, 9,968.52 and 4,239.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,223.50 : 9,968.52 = 4,239.40 : x
2. Step 2: Convert to fraction form
   7,223.50/9,968.52 = 4,239.40/x
3. Step 3: Cross multiply
   7,223.50x = 9,968.52 × 4,239.40
4. Step 4: Simplify right side
   7,223.50x = 42,260,543.69
5. Step 5: Solve for x
   x = 42,260,543.69/7,223.50
6. Step 6: Final answer
   x = 5,850.42