Finding the Fourth Proportional to 21,271.27, 31,906.90 and 5,688.49

Step by Step Solution

1. Step 1: Write the proportion equation
   21,271.27 : 31,906.90 = 5,688.49 : x
2. Step 2: Convert to fraction form
   21,271.27/31,906.90 = 5,688.49/x
3. Step 3: Cross multiply
   21,271.27x = 31,906.90 × 5,688.49
4. Step 4: Simplify right side
   21,271.27x = 181,502,081.58
5. Step 5: Solve for x
   x = 181,502,081.58/21,271.27
6. Step 6: Final answer
   x = 8,532.73