Finding the Fourth Proportional to 12,809.34, 17,676.96 and 7,144.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,809.34 : 17,676.96 = 7,144.46 : x
2. Step 2: Convert to fraction form
   12,809.34/17,676.96 = 7,144.46/x
3. Step 3: Cross multiply
   12,809.34x = 17,676.96 × 7,144.46
4. Step 4: Simplify right side
   12,809.34x = 126,292,333.64
5. Step 5: Solve for x
   x = 126,292,333.64/12,809.34
6. Step 6: Final answer
   x = 9,859.39