Finding the Fourth Proportional to 16,434.80, 22,686.18 and 12,465.40

Step by Step Solution

1. Step 1: Write the proportion equation
   16,434.80 : 22,686.18 = 12,465.40 : x
2. Step 2: Convert to fraction form
   16,434.80/22,686.18 = 12,465.40/x
3. Step 3: Cross multiply
   16,434.80x = 22,686.18 × 12,465.40
4. Step 4: Simplify right side
   16,434.80x = 282,792,308.17
5. Step 5: Solve for x
   x = 282,792,308.17/16,434.80
6. Step 6: Final answer
   x = 17,206.92