Finding the Fourth Proportional to 16,443.18, 22,691.79 and 9,369.63

Step by Step Solution

1. Step 1: Write the proportion equation
   16,443.18 : 22,691.79 = 9,369.63 : x
2. Step 2: Convert to fraction form
   16,443.18/22,691.79 = 9,369.63/x
3. Step 3: Cross multiply
   16,443.18x = 22,691.79 × 9,369.63
4. Step 4: Simplify right side
   16,443.18x = 212,613,676.34
5. Step 5: Solve for x
   x = 212,613,676.34/16,443.18
6. Step 6: Final answer
   x = 12,930.20