Finding the Fourth Proportional to 16,663.30, 22,995.40 and 9,109.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,663.30 : 22,995.40 = 9,109.72 : x
2. Step 2: Convert to fraction form
   16,663.30/22,995.40 = 9,109.72/x
3. Step 3: Cross multiply
   16,663.30x = 22,995.40 × 9,109.72
4. Step 4: Simplify right side
   16,663.30x = 209,481,655.29
5. Step 5: Solve for x
   x = 209,481,655.29/16,663.30
6. Step 6: Final answer
   x = 12,571.44