Finding the Fourth Proportional to 10,223.88, 15,324.89 and 5,288.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,223.88 : 15,324.89 = 5,288.55 : x
2. Step 2: Convert to fraction form
   10,223.88/15,324.89 = 5,288.55/x
3. Step 3: Cross multiply
   10,223.88x = 15,324.89 × 5,288.55
4. Step 4: Simplify right side
   10,223.88x = 81,046,420.57
5. Step 5: Solve for x
   x = 81,046,420.57/10,223.88
6. Step 6: Final answer
   x = 7,927.17