Finding the Fourth Proportional to 16,421.50, 22,662.23 and 8,969.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,421.50 : 22,662.23 = 8,969.98 : x
2. Step 2: Convert to fraction form
   16,421.50/22,662.23 = 8,969.98/x
3. Step 3: Cross multiply
   16,421.50x = 22,662.23 × 8,969.98
4. Step 4: Simplify right side
   16,421.50x = 203,279,749.86
5. Step 5: Solve for x
   x = 203,279,749.86/16,421.50
6. Step 6: Final answer
   x = 12,378.88