Finding the Fourth Proportional to 12,645.58, 17,456.97 and 7,339.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,645.58 : 17,456.97 = 7,339.54 : x
2. Step 2: Convert to fraction form
   12,645.58/17,456.97 = 7,339.54/x
3. Step 3: Cross multiply
   12,645.58x = 17,456.97 × 7,339.54
4. Step 4: Simplify right side
   12,645.58x = 128,126,129.59
5. Step 5: Solve for x
   x = 128,126,129.59/12,645.58
6. Step 6: Final answer
   x = 10,132.09