Finding the Fourth Proportional to 16,381.22, 22,605.17 and 9,665.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,381.22 : 22,605.17 = 9,665.31 : x
2. Step 2: Convert to fraction form
   16,381.22/22,605.17 = 9,665.31/x
3. Step 3: Cross multiply
   16,381.22x = 22,605.17 × 9,665.31
4. Step 4: Simplify right side
   16,381.22x = 218,485,927.33
5. Step 5: Solve for x
   x = 218,485,927.33/16,381.22
6. Step 6: Final answer
   x = 13,337.59