Finding the Fourth Proportional to 8,200.35, 12,282.30 and 8,200.35

Step by Step Solution

1. Step 1: Write the proportion equation
   8,200.35 : 12,282.30 = 8,200.35 : x
2. Step 2: Convert to fraction form
   8,200.35/12,282.30 = 8,200.35/x
3. Step 3: Cross multiply
   8,200.35x = 12,282.30 × 8,200.35
4. Step 4: Simplify right side
   8,200.35x = 100,719,158.81
5. Step 5: Solve for x
   x = 100,719,158.81/8,200.35
6. Step 6: Final answer
   x = 12,282.30