Finding the Fourth Proportional to 16,978.15, 23,427.36 and 9,424.54

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.15 : 23,427.36 = 9,424.54 : x
2. Step 2: Convert to fraction form
   16,978.15/23,427.36 = 9,424.54/x
3. Step 3: Cross multiply
   16,978.15x = 23,427.36 × 9,424.54
4. Step 4: Simplify right side
   16,978.15x = 220,792,146.83
5. Step 5: Solve for x
   x = 220,792,146.83/16,978.15
6. Step 6: Final answer
   x = 13,004.48