Finding the Fourth Proportional to 17,871.14, 24,661.80 and 9,913.21

Step by Step Solution

1. Step 1: Write the proportion equation
   17,871.14 : 24,661.80 = 9,913.21 : x
2. Step 2: Convert to fraction form
   17,871.14/24,661.80 = 9,913.21/x
3. Step 3: Cross multiply
   17,871.14x = 24,661.80 × 9,913.21
4. Step 4: Simplify right side
   17,871.14x = 244,477,540.72
5. Step 5: Solve for x
   x = 244,477,540.72/17,871.14
6. Step 6: Final answer
   x = 13,680.02