Finding the Fourth Proportional to 21,280.88, 31,922.82 and 6,287.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,280.88 : 31,922.82 = 6,287.82 : x
2. Step 2: Convert to fraction form
   21,280.88/31,922.82 = 6,287.82/x
3. Step 3: Cross multiply
   21,280.88x = 31,922.82 × 6,287.82
4. Step 4: Simplify right side
   21,280.88x = 200,724,946.05
5. Step 5: Solve for x
   x = 200,724,946.05/21,280.88
6. Step 6: Final answer
   x = 9,432.17