Finding the Fourth Proportional to 21,160.38, 31,743.27 and 7,114.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,160.38 : 31,743.27 = 7,114.38 : x
2. Step 2: Convert to fraction form
   21,160.38/31,743.27 = 7,114.38/x
3. Step 3: Cross multiply
   21,160.38x = 31,743.27 × 7,114.38
4. Step 4: Simplify right side
   21,160.38x = 225,833,685.22
5. Step 5: Solve for x
   x = 225,833,685.22/21,160.38
6. Step 6: Final answer
   x = 10,672.48