Finding the Fourth Proportional to 12,771.30, 17,623.82 and 7,105.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,771.30 : 17,623.82 = 7,105.61 : x
2. Step 2: Convert to fraction form
   12,771.30/17,623.82 = 7,105.61/x
3. Step 3: Cross multiply
   12,771.30x = 17,623.82 × 7,105.61
4. Step 4: Simplify right side
   12,771.30x = 125,227,867.98
5. Step 5: Solve for x
   x = 125,227,867.98/12,771.30
6. Step 6: Final answer
   x = 9,805.41