Finding the Fourth Proportional to 21,231.67, 31,847.46 and 5,649.30

Step by Step Solution

1. Step 1: Write the proportion equation
   21,231.67 : 31,847.46 = 5,649.30 : x
2. Step 2: Convert to fraction form
   21,231.67/31,847.46 = 5,649.30/x
3. Step 3: Cross multiply
   21,231.67x = 31,847.46 × 5,649.30
4. Step 4: Simplify right side
   21,231.67x = 179,915,855.78
5. Step 5: Solve for x
   x = 179,915,855.78/21,231.67
6. Step 6: Final answer
   x = 8,473.94