Finding the Fourth Proportional to 21,942.89, 32,908.05 and 7,153.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,942.89 : 32,908.05 = 7,153.10 : x
2. Step 2: Convert to fraction form
   21,942.89/32,908.05 = 7,153.10/x
3. Step 3: Cross multiply
   21,942.89x = 32,908.05 × 7,153.10
4. Step 4: Simplify right side
   21,942.89x = 235,394,407.91
5. Step 5: Solve for x
   x = 235,394,407.91/21,942.89
6. Step 6: Final answer
   x = 10,727.60