Finding the Fourth Proportional to 21,822.72, 32,712.16 and 7,020.76

Step by Step Solution

1. Step 1: Write the proportion equation
   21,822.72 : 32,712.16 = 7,020.76 : x
2. Step 2: Convert to fraction form
   21,822.72/32,712.16 = 7,020.76/x
3. Step 3: Cross multiply
   21,822.72x = 32,712.16 × 7,020.76
4. Step 4: Simplify right side
   21,822.72x = 229,664,224.44
5. Step 5: Solve for x
   x = 229,664,224.44/21,822.72
6. Step 6: Final answer
   x = 10,524.09