Finding the Fourth Proportional to 22,146.78, 30,694.49 and 21,732.06

Step by Step Solution

1. Step 1: Write the proportion equation
   22,146.78 : 30,694.49 = 21,732.06 : x
2. Step 2: Convert to fraction form
   22,146.78/30,694.49 = 21,732.06/x
3. Step 3: Cross multiply
   22,146.78x = 30,694.49 × 21,732.06
4. Step 4: Simplify right side
   22,146.78x = 667,054,389.69
5. Step 5: Solve for x
   x = 667,054,389.69/22,146.78
6. Step 6: Final answer
   x = 30,119.70