Finding the Fourth Proportional to 8,287.30, 12,425.99 and 5,622.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,287.30 : 12,425.99 = 5,622.16 : x
2. Step 2: Convert to fraction form
   8,287.30/12,425.99 = 5,622.16/x
3. Step 3: Cross multiply
   8,287.30x = 12,425.99 × 5,622.16
4. Step 4: Simplify right side
   8,287.30x = 69,860,903.94
5. Step 5: Solve for x
   x = 69,860,903.94/8,287.30
6. Step 6: Final answer
   x = 8,429.88