Finding the Fourth Proportional to 17,128.40, 25,686.25 and 7,132.59

Step by Step Solution

1. Step 1: Write the proportion equation
   17,128.40 : 25,686.25 = 7,132.59 : x
2. Step 2: Convert to fraction form
   17,128.40/25,686.25 = 7,132.59/x
3. Step 3: Cross multiply
   17,128.40x = 25,686.25 × 7,132.59
4. Step 4: Simplify right side
   17,128.40x = 183,209,472.06
5. Step 5: Solve for x
   x = 183,209,472.06/17,128.40
6. Step 6: Final answer
   x = 10,696.24