Finding the Fourth Proportional to 21,046.50, 31,566.24 and 10,505.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,046.50 : 31,566.24 = 10,505.34 : x
2. Step 2: Convert to fraction form
   21,046.50/31,566.24 = 10,505.34/x
3. Step 3: Cross multiply
   21,046.50x = 31,566.24 × 10,505.34
4. Step 4: Simplify right side
   21,046.50x = 331,614,083.72
5. Step 5: Solve for x
   x = 331,614,083.72/21,046.50
6. Step 6: Final answer
   x = 15,756.26