Finding the Fourth Proportional to 12,625.88, 17,429.18 and 7,912.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,625.88 : 17,429.18 = 7,912.89 : x
2. Step 2: Convert to fraction form
   12,625.88/17,429.18 = 7,912.89/x
3. Step 3: Cross multiply
   12,625.88x = 17,429.18 × 7,912.89
4. Step 4: Simplify right side
   12,625.88x = 137,915,144.57
5. Step 5: Solve for x
   x = 137,915,144.57/12,625.88
6. Step 6: Final answer
   x = 10,923.21