Finding the Fourth Proportional to 20,270.84, 30,351.56 and 13,233.42

Step by Step Solution

1. Step 1: Write the proportion equation
   20,270.84 : 30,351.56 = 13,233.42 : x
2. Step 2: Convert to fraction form
   20,270.84/30,351.56 = 13,233.42/x
3. Step 3: Cross multiply
   20,270.84x = 30,351.56 × 13,233.42
4. Step 4: Simplify right side
   20,270.84x = 401,654,941.14
5. Step 5: Solve for x
   x = 401,654,941.14/20,270.84
6. Step 6: Final answer
   x = 19,814.42