Finding the Fourth Proportional to 11,105.98, 16,662.31 and 6,424.92

Step by Step Solution

1. Step 1: Write the proportion equation
   11,105.98 : 16,662.31 = 6,424.92 : x
2. Step 2: Convert to fraction form
   11,105.98/16,662.31 = 6,424.92/x
3. Step 3: Cross multiply
   11,105.98x = 16,662.31 × 6,424.92
4. Step 4: Simplify right side
   11,105.98x = 107,053,992.70
5. Step 5: Solve for x
   x = 107,053,992.70/11,105.98
6. Step 6: Final answer
   x = 9,639.31