Finding the Fourth Proportional to 12,609.09, 17,401.91 and 7,894.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,609.09 : 17,401.91 = 7,894.89 : x
2. Step 2: Convert to fraction form
   12,609.09/17,401.91 = 7,894.89/x
3. Step 3: Cross multiply
   12,609.09x = 17,401.91 × 7,894.89
4. Step 4: Simplify right side
   12,609.09x = 137,386,125.77
5. Step 5: Solve for x
   x = 137,386,125.77/12,609.09
6. Step 6: Final answer
   x = 10,895.80