Finding the Fourth Proportional to 21,942.27, 32,916.81 and 7,147.74

Step by Step Solution

1. Step 1: Write the proportion equation
   21,942.27 : 32,916.81 = 7,147.74 : x
2. Step 2: Convert to fraction form
   21,942.27/32,916.81 = 7,147.74/x
3. Step 3: Cross multiply
   21,942.27x = 32,916.81 × 7,147.74
4. Step 4: Simplify right side
   21,942.27x = 235,280,799.51
5. Step 5: Solve for x
   x = 235,280,799.51/21,942.27
6. Step 6: Final answer
   x = 10,722.72