Finding the Fourth Proportional to 21,248.98, 31,844.31 and 10,838.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,248.98 : 31,844.31 = 10,838.86 : x
2. Step 2: Convert to fraction form
   21,248.98/31,844.31 = 10,838.86/x
3. Step 3: Cross multiply
   21,248.98x = 31,844.31 × 10,838.86
4. Step 4: Simplify right side
   21,248.98x = 345,156,017.89
5. Step 5: Solve for x
   x = 345,156,017.89/21,248.98
6. Step 6: Final answer
   x = 16,243.42