Finding the Fourth Proportional to 12,481.02, 17,216.55 and 8,945.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,481.02 : 17,216.55 = 8,945.10 : x
2. Step 2: Convert to fraction form
   12,481.02/17,216.55 = 8,945.10/x
3. Step 3: Cross multiply
   12,481.02x = 17,216.55 × 8,945.10
4. Step 4: Simplify right side
   12,481.02x = 154,003,761.41
5. Step 5: Solve for x
   x = 154,003,761.41/12,481.02
6. Step 6: Final answer
   x = 12,339.04