Finding the Fourth Proportional to 19,016.32, 28,387.28 and 16,067.20

Step by Step Solution

1. Step 1: Write the proportion equation
   19,016.32 : 28,387.28 = 16,067.20 : x
2. Step 2: Convert to fraction form
   19,016.32/28,387.28 = 16,067.20/x
3. Step 3: Cross multiply
   19,016.32x = 28,387.28 × 16,067.20
4. Step 4: Simplify right side
   19,016.32x = 456,104,105.22
5. Step 5: Solve for x
   x = 456,104,105.22/19,016.32
6. Step 6: Final answer
   x = 23,984.88