Finding the Fourth Proportional to 9,223.25, 12,728.13 and 5,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,223.25 : 12,728.13 = 5,031.50 : x
2. Step 2: Convert to fraction form
   9,223.25/12,728.13 = 5,031.50/x
3. Step 3: Cross multiply
   9,223.25x = 12,728.13 × 5,031.50
4. Step 4: Simplify right side
   9,223.25x = 64,041,586.10
5. Step 5: Solve for x
   x = 64,041,586.10/9,223.25
6. Step 6: Final answer
   x = 6,943.49