Finding the Fourth Proportional to 16,663.20, 22,995.30 and 9,109.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,663.20 : 22,995.30 = 9,109.42 : x
2. Step 2: Convert to fraction form
   16,663.20/22,995.30 = 9,109.42/x
3. Step 3: Cross multiply
   16,663.20x = 22,995.30 × 9,109.42
4. Step 4: Simplify right side
   16,663.20x = 209,473,845.73
5. Step 5: Solve for x
   x = 209,473,845.73/16,663.20
6. Step 6: Final answer
   x = 12,571.05