Finding the Fourth Proportional to 16,686.11, 23,016.82 and 11,020.86

Step by Step Solution

1. Step 1: Write the proportion equation
   16,686.11 : 23,016.82 = 11,020.86 : x
2. Step 2: Convert to fraction form
   16,686.11/23,016.82 = 11,020.86/x
3. Step 3: Cross multiply
   16,686.11x = 23,016.82 × 11,020.86
4. Step 4: Simplify right side
   16,686.11x = 253,665,209.63
5. Step 5: Solve for x
   x = 253,665,209.63/16,686.11
6. Step 6: Final answer
   x = 15,202.18