Finding the Fourth Proportional to 21,096.98, 31,617.78 and 15,524.23

Step by Step Solution

1. Step 1: Write the proportion equation
   21,096.98 : 31,617.78 = 15,524.23 : x
2. Step 2: Convert to fraction form
   21,096.98/31,617.78 = 15,524.23/x
3. Step 3: Cross multiply
   21,096.98x = 31,617.78 × 15,524.23
4. Step 4: Simplify right side
   21,096.98x = 490,841,530.72
5. Step 5: Solve for x
   x = 490,841,530.72/21,096.98
6. Step 6: Final answer
   x = 23,265.97