Finding the Fourth Proportional to 16,290.97, 24,411.85 and 12,111.37

Step by Step Solution

1. Step 1: Write the proportion equation
   16,290.97 : 24,411.85 = 12,111.37 : x
2. Step 2: Convert to fraction form
   16,290.97/24,411.85 = 12,111.37/x
3. Step 3: Cross multiply
   16,290.97x = 24,411.85 × 12,111.37
4. Step 4: Simplify right side
   16,290.97x = 295,660,947.73
5. Step 5: Solve for x
   x = 295,660,947.73/16,290.97
6. Step 6: Final answer
   x = 18,148.76