Finding the Fourth Proportional to 12,481.05, 17,302.71 and 11,815.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,481.05 : 17,302.71 = 11,815.23 : x
2. Step 2: Convert to fraction form
   12,481.05/17,302.71 = 11,815.23/x
3. Step 3: Cross multiply
   12,481.05x = 17,302.71 × 11,815.23
4. Step 4: Simplify right side
   12,481.05x = 204,435,498.27
5. Step 5: Solve for x
   x = 204,435,498.27/12,481.05
6. Step 6: Final answer
   x = 16,379.67