Finding the Fourth Proportional to 16,611.86, 24,877.31 and 10,986.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,611.86 : 24,877.31 = 10,986.10 : x
2. Step 2: Convert to fraction form
   16,611.86/24,877.31 = 10,986.10/x
3. Step 3: Cross multiply
   16,611.86x = 24,877.31 × 10,986.10
4. Step 4: Simplify right side
   16,611.86x = 273,304,615.39
5. Step 5: Solve for x
   x = 273,304,615.39/16,611.86
6. Step 6: Final answer
   x = 16,452.38