Finding the Fourth Proportional to 9,223.31, 12,728.22 and 5,031.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,223.31 : 12,728.22 = 5,031.56 : x
2. Step 2: Convert to fraction form
   9,223.31/12,728.22 = 5,031.56/x
3. Step 3: Cross multiply
   9,223.31x = 12,728.22 × 5,031.56
4. Step 4: Simplify right side
   9,223.31x = 64,042,815.58
5. Step 5: Solve for x
   x = 64,042,815.58/9,223.31
6. Step 6: Final answer
   x = 6,943.58