Finding the Fourth Proportional to 17,921.09, 24,728.96 and 9,853.43

Step by Step Solution

1. Step 1: Write the proportion equation
   17,921.09 : 24,728.96 = 9,853.43 : x
2. Step 2: Convert to fraction form
   17,921.09/24,728.96 = 9,853.43/x
3. Step 3: Cross multiply
   17,921.09x = 24,728.96 × 9,853.43
4. Step 4: Simplify right side
   17,921.09x = 243,664,977.32
5. Step 5: Solve for x
   x = 243,664,977.32/17,921.09
6. Step 6: Final answer
   x = 13,596.55