Finding the Fourth Proportional to 16,433.31, 22,682.62 and 9,721.27

Step by Step Solution

1. Step 1: Write the proportion equation
   16,433.31 : 22,682.62 = 9,721.27 : x
2. Step 2: Convert to fraction form
   16,433.31/22,682.62 = 9,721.27/x
3. Step 3: Cross multiply
   16,433.31x = 22,682.62 × 9,721.27
4. Step 4: Simplify right side
   16,433.31x = 220,503,859.15
5. Step 5: Solve for x
   x = 220,503,859.15/16,433.31
6. Step 6: Final answer
   x = 13,418.10