Finding the Fourth Proportional to 8,392.96, 12,582.72 and 5,622.40

Step by Step Solution

1. Step 1: Write the proportion equation
   8,392.96 : 12,582.72 = 5,622.40 : x
2. Step 2: Convert to fraction form
   8,392.96/12,582.72 = 5,622.40/x
3. Step 3: Cross multiply
   8,392.96x = 12,582.72 × 5,622.40
4. Step 4: Simplify right side
   8,392.96x = 70,745,084.93
5. Step 5: Solve for x
   x = 70,745,084.93/8,392.96
6. Step 6: Final answer
   x = 8,429.10