Finding the Fourth Proportional to 12,456.25, 17,189.63 and 7,151.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456.25 : 17,189.63 = 7,151.41 : x
2. Step 2: Convert to fraction form
   12,456.25/17,189.63 = 7,151.41/x
3. Step 3: Cross multiply
   12,456.25x = 17,189.63 × 7,151.41
4. Step 4: Simplify right side
   12,456.25x = 122,930,091.88
5. Step 5: Solve for x
   x = 122,930,091.88/12,456.25
6. Step 6: Final answer
   x = 9,868.95