Finding the Fourth Proportional to 17,886, 24,665.40 and 13,900.80

Step by Step Solution

1. Step 1: Write the proportion equation
   17,886 : 24,665.40 = 13,900.80 : x
2. Step 2: Convert to fraction form
   17,886/24,665.40 = 13,900.80/x
3. Step 3: Cross multiply
   17,886x = 24,665.40 × 13,900.80
4. Step 4: Simplify right side
   17,886x = 342,868,792.32
5. Step 5: Solve for x
   x = 342,868,792.32/17,886
6. Step 6: Final answer
   x = 19,169.67