Finding the Fourth Proportional to 12,757.16, 17,605.42 and 7,091.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,757.16 : 17,605.42 = 7,091.89 : x
2. Step 2: Convert to fraction form
   12,757.16/17,605.42 = 7,091.89/x
3. Step 3: Cross multiply
   12,757.16x = 17,605.42 × 7,091.89
4. Step 4: Simplify right side
   12,757.16x = 124,855,640.30
5. Step 5: Solve for x
   x = 124,855,640.30/12,757.16
6. Step 6: Final answer
   x = 9,787.10