Finding the Fourth Proportional to 12,456.89, 17,190.74 and 6,791.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456.89 : 17,190.74 = 6,791.69 : x
2. Step 2: Convert to fraction form
   12,456.89/17,190.74 = 6,791.69/x
3. Step 3: Cross multiply
   12,456.89x = 17,190.74 × 6,791.69
4. Step 4: Simplify right side
   12,456.89x = 116,754,057.04
5. Step 5: Solve for x
   x = 116,754,057.04/12,456.89
6. Step 6: Final answer
   x = 9,372.65