Finding the Fourth Proportional to 21,597.74, 29,814.89 and 15,229.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,597.74 : 29,814.89 = 15,229.52 : x
2. Step 2: Convert to fraction form
   21,597.74/29,814.89 = 15,229.52/x
3. Step 3: Cross multiply
   21,597.74x = 29,814.89 × 15,229.52
4. Step 4: Simplify right side
   21,597.74x = 454,066,350.14
5. Step 5: Solve for x
   x = 454,066,350.14/21,597.74
6. Step 6: Final answer
   x = 21,023.79