Finding the Fourth Proportional to 12,676.57, 17,493.71 and 7,087.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,676.57 : 17,493.71 = 7,087.57 : x
2. Step 2: Convert to fraction form
   12,676.57/17,493.71 = 7,087.57/x
3. Step 3: Cross multiply
   12,676.57x = 17,493.71 × 7,087.57
4. Step 4: Simplify right side
   12,676.57x = 123,987,894.18
5. Step 5: Solve for x
   x = 123,987,894.18/12,676.57
6. Step 6: Final answer
   x = 9,780.87