Finding the Fourth Proportional to 12,016.44, 17,998.29 and 9,912.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,016.44 : 17,998.29 = 9,912.78 : x
2. Step 2: Convert to fraction form
   12,016.44/17,998.29 = 9,912.78/x
3. Step 3: Cross multiply
   12,016.44x = 17,998.29 × 9,912.78
4. Step 4: Simplify right side
   12,016.44x = 178,413,089.15
5. Step 5: Solve for x
   x = 178,413,089.15/12,016.44
6. Step 6: Final answer
   x = 14,847.42