Finding the Fourth Proportional to 17,921.40, 24,731.82 and 9,963.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,921.40 : 24,731.82 = 9,963.72 : x
2. Step 2: Convert to fraction form
   17,921.40/24,731.82 = 9,963.72/x
3. Step 3: Cross multiply
   17,921.40x = 24,731.82 × 9,963.72
4. Step 4: Simplify right side
   17,921.40x = 246,420,929.57
5. Step 5: Solve for x
   x = 246,420,929.57/17,921.40
6. Step 6: Final answer
   x = 13,750.09