Finding the Fourth Proportional to 16,686.69, 23,046.74 and 12,169.53

Step by Step Solution

1. Step 1: Write the proportion equation
   16,686.69 : 23,046.74 = 12,169.53 : x
2. Step 2: Convert to fraction form
   16,686.69/23,046.74 = 12,169.53/x
3. Step 3: Cross multiply
   16,686.69x = 23,046.74 × 12,169.53
4. Step 4: Simplify right side
   16,686.69x = 280,467,932.98
5. Step 5: Solve for x
   x = 280,467,932.98/16,686.69
6. Step 6: Final answer
   x = 16,807.88