Finding the Fourth Proportional to 16,081.28, 24,231.46 and 13,223.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,081.28 : 24,231.46 = 13,223.60 : x
2. Step 2: Convert to fraction form
   16,081.28/24,231.46 = 13,223.60/x
3. Step 3: Cross multiply
   16,081.28x = 24,231.46 × 13,223.60
4. Step 4: Simplify right side
   16,081.28x = 320,427,134.46
5. Step 5: Solve for x
   x = 320,427,134.46/16,081.28
6. Step 6: Final answer
   x = 19,925.47