Finding the Fourth Proportional to 12,725.04, 17,555.22 and 7,689.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,725.04 : 17,555.22 = 7,689.27 : x
2. Step 2: Convert to fraction form
   12,725.04/17,555.22 = 7,689.27/x
3. Step 3: Cross multiply
   12,725.04x = 17,555.22 × 7,689.27
4. Step 4: Simplify right side
   12,725.04x = 134,986,826.49
5. Step 5: Solve for x
   x = 134,986,826.49/12,725.04
6. Step 6: Final answer
   x = 10,607.97