Finding the Fourth Proportional to 16,443.98, 22,690.95 and 9,729.89

Step by Step Solution

1. Step 1: Write the proportion equation
   16,443.98 : 22,690.95 = 9,729.89 : x
2. Step 2: Convert to fraction form
   16,443.98/22,690.95 = 9,729.89/x
3. Step 3: Cross multiply
   16,443.98x = 22,690.95 × 9,729.89
4. Step 4: Simplify right side
   16,443.98x = 220,780,467.74
5. Step 5: Solve for x
   x = 220,780,467.74/16,443.98
6. Step 6: Final answer
   x = 13,426.22