Finding the Fourth Proportional to 16,404.71, 24,584.19 and 12,398.81

Step by Step Solution

1. Step 1: Write the proportion equation
   16,404.71 : 24,584.19 = 12,398.81 : x
2. Step 2: Convert to fraction form
   16,404.71/24,584.19 = 12,398.81/x
3. Step 3: Cross multiply
   16,404.71x = 24,584.19 × 12,398.81
4. Step 4: Simplify right side
   16,404.71x = 304,814,577.89
5. Step 5: Solve for x
   x = 304,814,577.89/16,404.71
6. Step 6: Final answer
   x = 18,580.92