Finding the Fourth Proportional to 21,321, 31,937.82 and 10,776.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,321 : 31,937.82 = 10,776.24 : x
2. Step 2: Convert to fraction form
   21,321/31,937.82 = 10,776.24/x
3. Step 3: Cross multiply
   21,321x = 31,937.82 × 10,776.24
4. Step 4: Simplify right side
   21,321x = 344,169,613.40
5. Step 5: Solve for x
   x = 344,169,613.40/21,321
6. Step 6: Final answer
   x = 16,142.28