Finding the Fourth Proportional to 12,759.56, 17,609.82 and 7,170.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,759.56 : 17,609.82 = 7,170.56 : x
2. Step 2: Convert to fraction form
   12,759.56/17,609.82 = 7,170.56/x
3. Step 3: Cross multiply
   12,759.56x = 17,609.82 × 7,170.56
4. Step 4: Simplify right side
   12,759.56x = 126,272,270.90
5. Step 5: Solve for x
   x = 126,272,270.90/12,759.56
6. Step 6: Final answer
   x = 9,896.29