Finding the Fourth Proportional to 8,218.64, 12,323.40 and 5,624.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,218.64 : 12,323.40 = 5,624.72 : x
2. Step 2: Convert to fraction form
   8,218.64/12,323.40 = 5,624.72/x
3. Step 3: Cross multiply
   8,218.64x = 12,323.40 × 5,624.72
4. Step 4: Simplify right side
   8,218.64x = 69,315,674.45
5. Step 5: Solve for x
   x = 69,315,674.45/8,218.64
6. Step 6: Final answer
   x = 8,433.96