Finding the Fourth Proportional to 16,443, 22,691.31 and 8,889.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,443 : 22,691.31 = 8,889.34 : x
2. Step 2: Convert to fraction form
   16,443/22,691.31 = 8,889.34/x
3. Step 3: Cross multiply
   16,443x = 22,691.31 × 8,889.34
4. Step 4: Simplify right side
   16,443x = 201,710,769.64
5. Step 5: Solve for x
   x = 201,710,769.64/16,443
6. Step 6: Final answer
   x = 12,267.27