Finding the Fourth Proportional to 12,675.48, 17,493.66 and 7,085.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,675.48 : 17,493.66 = 7,085.40 : x
2. Step 2: Convert to fraction form
   12,675.48/17,493.66 = 7,085.40/x
3. Step 3: Cross multiply
   12,675.48x = 17,493.66 × 7,085.40
4. Step 4: Simplify right side
   12,675.48x = 123,949,578.56
5. Step 5: Solve for x
   x = 123,949,578.56/12,675.48
6. Step 6: Final answer
   x = 9,778.69