Finding the Fourth Proportional to 21,271.20, 31,906.83 and 5,688.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,271.20 : 31,906.83 = 5,688.82 : x
2. Step 2: Convert to fraction form
   21,271.20/31,906.83 = 5,688.82/x
3. Step 3: Cross multiply
   21,271.20x = 31,906.83 × 5,688.82
4. Step 4: Simplify right side
   21,271.20x = 181,512,212.64
5. Step 5: Solve for x
   x = 181,512,212.64/21,271.20
6. Step 6: Final answer
   x = 8,533.24