Finding the Fourth Proportional to 16,297.43, 22,490.78 and 12,716.46

Step by Step Solution

1. Step 1: Write the proportion equation
   16,297.43 : 22,490.78 = 12,716.46 : x
2. Step 2: Convert to fraction form
   16,297.43/22,490.78 = 12,716.46/x
3. Step 3: Cross multiply
   16,297.43x = 22,490.78 × 12,716.46
4. Step 4: Simplify right side
   16,297.43x = 286,003,040.66
5. Step 5: Solve for x
   x = 286,003,040.66/16,297.43
6. Step 6: Final answer
   x = 17,548.97