Finding the Fourth Proportional to 14,280.78, 19,707.47 and 7,993.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,280.78 : 19,707.47 = 7,993.15 : x
2. Step 2: Convert to fraction form
   14,280.78/19,707.47 = 7,993.15/x
3. Step 3: Cross multiply
   14,280.78x = 19,707.47 × 7,993.15
4. Step 4: Simplify right side
   14,280.78x = 157,524,763.83
5. Step 5: Solve for x
   x = 157,524,763.83/14,280.78
6. Step 6: Final answer
   x = 11,030.55