Finding the Fourth Proportional to 22,728.79, 34,098.56 and 7,146.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,728.79 : 34,098.56 = 7,146.42 : x
2. Step 2: Convert to fraction form
   22,728.79/34,098.56 = 7,146.42/x
3. Step 3: Cross multiply
   22,728.79x = 34,098.56 × 7,146.42
4. Step 4: Simplify right side
   22,728.79x = 243,682,631.16
5. Step 5: Solve for x
   x = 243,682,631.16/22,728.79
6. Step 6: Final answer
   x = 10,721.32