Finding the Fourth Proportional to 17,828.56, 24,603.78 and 9,871.39

Step by Step Solution

1. Step 1: Write the proportion equation
   17,828.56 : 24,603.78 = 9,871.39 : x
2. Step 2: Convert to fraction form
   17,828.56/24,603.78 = 9,871.39/x
3. Step 3: Cross multiply
   17,828.56x = 24,603.78 × 9,871.39
4. Step 4: Simplify right side
   17,828.56x = 242,873,507.85
5. Step 5: Solve for x
   x = 242,873,507.85/17,828.56
6. Step 6: Final answer
   x = 13,622.72