Finding the Fourth Proportional to 21,269.72, 31,902.17 and 5,688.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,269.72 : 31,902.17 = 5,688.56 : x
2. Step 2: Convert to fraction form
   21,269.72/31,902.17 = 5,688.56/x
3. Step 3: Cross multiply
   21,269.72x = 31,902.17 × 5,688.56
4. Step 4: Simplify right side
   21,269.72x = 181,477,459.49
5. Step 5: Solve for x
   x = 181,477,459.49/21,269.72
6. Step 6: Final answer
   x = 8,532.20