Finding the Fourth Proportional to 12,448.92, 17,155.89 and 8,905.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,448.92 : 17,155.89 = 8,905.98 : x
2. Step 2: Convert to fraction form
   12,448.92/17,155.89 = 8,905.98/x
3. Step 3: Cross multiply
   12,448.92x = 17,155.89 × 8,905.98
4. Step 4: Simplify right side
   12,448.92x = 152,790,013.22
5. Step 5: Solve for x
   x = 152,790,013.22/12,448.92
6. Step 6: Final answer
   x = 12,273.35