Finding the Fourth Proportional to 14,016.72, 19,343.28 and 7,728.96

Step by Step Solution

1. Step 1: Write the proportion equation
   14,016.72 : 19,343.28 = 7,728.96 : x
2. Step 2: Convert to fraction form
   14,016.72/19,343.28 = 7,728.96/x
3. Step 3: Cross multiply
   14,016.72x = 19,343.28 × 7,728.96
4. Step 4: Simplify right side
   14,016.72x = 149,503,437.39
5. Step 5: Solve for x
   x = 149,503,437.39/14,016.72
6. Step 6: Final answer
   x = 10,666.08