Finding the Fourth Proportional to 12,481.89, 18,730.89 and 8,039.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,481.89 : 18,730.89 = 8,039.09 : x
2. Step 2: Convert to fraction form
   12,481.89/18,730.89 = 8,039.09/x
3. Step 3: Cross multiply
   12,481.89x = 18,730.89 × 8,039.09
4. Step 4: Simplify right side
   12,481.89x = 150,579,270.29
5. Step 5: Solve for x
   x = 150,579,270.29/12,481.89
6. Step 6: Final answer
   x = 12,063.82