Finding the Fourth Proportional to 16,371.71, 24,557.74 and 13,105.57

Step by Step Solution

1. Step 1: Write the proportion equation
   16,371.71 : 24,557.74 = 13,105.57 : x
2. Step 2: Convert to fraction form
   16,371.71/24,557.74 = 13,105.57/x
3. Step 3: Cross multiply
   16,371.71x = 24,557.74 × 13,105.57
4. Step 4: Simplify right side
   16,371.71x = 321,843,206.22
5. Step 5: Solve for x
   x = 321,843,206.22/16,371.71
6. Step 6: Final answer
   x = 19,658.49