Finding the Fourth Proportional to 12,145.41, 16,759.49 and 8,960.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,145.41 : 16,759.49 = 8,960.45 : x
2. Step 2: Convert to fraction form
   12,145.41/16,759.49 = 8,960.45/x
3. Step 3: Cross multiply
   12,145.41x = 16,759.49 × 8,960.45
4. Step 4: Simplify right side
   12,145.41x = 150,172,443.57
5. Step 5: Solve for x
   x = 150,172,443.57/12,145.41
6. Step 6: Final answer
   x = 12,364.54