Finding the Fourth Proportional to 21,942.43, 32,916.38 and 7,147.37

Step by Step Solution

1. Step 1: Write the proportion equation
   21,942.43 : 32,916.38 = 7,147.37 : x
2. Step 2: Convert to fraction form
   21,942.43/32,916.38 = 7,147.37/x
3. Step 3: Cross multiply
   21,942.43x = 32,916.38 × 7,147.37
4. Step 4: Simplify right side
   21,942.43x = 235,265,593.47
5. Step 5: Solve for x
   x = 235,265,593.47/21,942.43
6. Step 6: Final answer
   x = 10,721.95