Finding the Fourth Proportional to 12,641.67, 17,446.32 and 7,605.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,641.67 : 17,446.32 = 7,605.90 : x
2. Step 2: Convert to fraction form
   12,641.67/17,446.32 = 7,605.90/x
3. Step 3: Cross multiply
   12,641.67x = 17,446.32 × 7,605.90
4. Step 4: Simplify right side
   12,641.67x = 132,694,965.29
5. Step 5: Solve for x
   x = 132,694,965.29/12,641.67
6. Step 6: Final answer
   x = 10,496.63