Finding the Fourth Proportional to 14,016.08, 19,342.17 and 7,728.47

Step by Step Solution

1. Step 1: Write the proportion equation
   14,016.08 : 19,342.17 = 7,728.47 : x
2. Step 2: Convert to fraction form
   14,016.08/19,342.17 = 7,728.47/x
3. Step 3: Cross multiply
   14,016.08x = 19,342.17 × 7,728.47
4. Step 4: Simplify right side
   14,016.08x = 149,485,380.58
5. Step 5: Solve for x
   x = 149,485,380.58/14,016.08
6. Step 6: Final answer
   x = 10,665.28