Finding the Fourth Proportional to 12,168.24, 16,792.68 and 7,690.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,168.24 : 16,792.68 = 7,690.37 : x
2. Step 2: Convert to fraction form
   12,168.24/16,792.68 = 7,690.37/x
3. Step 3: Cross multiply
   12,168.24x = 16,792.68 × 7,690.37
4. Step 4: Simplify right side
   12,168.24x = 129,141,838.53
5. Step 5: Solve for x
   x = 129,141,838.53/12,168.24
6. Step 6: Final answer
   x = 10,613.03