Finding the Fourth Proportional to 16,061.28, 22,164.72 and 8,988.08

Step by Step Solution

1. Step 1: Write the proportion equation
   16,061.28 : 22,164.72 = 8,988.08 : x
2. Step 2: Convert to fraction form
   16,061.28/22,164.72 = 8,988.08/x
3. Step 3: Cross multiply
   16,061.28x = 22,164.72 × 8,988.08
4. Step 4: Simplify right side
   16,061.28x = 199,218,276.54
5. Step 5: Solve for x
   x = 199,218,276.54/16,061.28
6. Step 6: Final answer
   x = 12,403.64