Finding the Fourth Proportional to 16,442.43, 22,690.79 and 9,727.89

Step by Step Solution

1. Step 1: Write the proportion equation
   16,442.43 : 22,690.79 = 9,727.89 : x
2. Step 2: Convert to fraction form
   16,442.43/22,690.79 = 9,727.89/x
3. Step 3: Cross multiply
   16,442.43x = 22,690.79 × 9,727.89
4. Step 4: Simplify right side
   16,442.43x = 220,733,460.49
5. Step 5: Solve for x
   x = 220,733,460.49/16,442.43
6. Step 6: Final answer
   x = 13,424.63