Finding the Fourth Proportional to 12,490.17, 17,228.27 and 8,006.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,490.17 : 17,228.27 = 8,006.82 : x
2. Step 2: Convert to fraction form
   12,490.17/17,228.27 = 8,006.82/x
3. Step 3: Cross multiply
   12,490.17x = 17,228.27 × 8,006.82
4. Step 4: Simplify right side
   12,490.17x = 137,943,676.82
5. Step 5: Solve for x
   x = 137,943,676.82/12,490.17
6. Step 6: Final answer
   x = 11,044.18