Finding the Fourth Proportional to 16,233.90, 22,399.57 and 9,521.63

Step by Step Solution

1. Step 1: Write the proportion equation
   16,233.90 : 22,399.57 = 9,521.63 : x
2. Step 2: Convert to fraction form
   16,233.90/22,399.57 = 9,521.63/x
3. Step 3: Cross multiply
   16,233.90x = 22,399.57 × 9,521.63
4. Step 4: Simplify right side
   16,233.90x = 213,280,417.70
5. Step 5: Solve for x
   x = 213,280,417.70/16,233.90
6. Step 6: Final answer
   x = 13,137.97