Finding the Fourth Proportional to 8,200.72, 12,298.52 and 2,355.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,200.72 : 12,298.52 = 2,355.76 : x
2. Step 2: Convert to fraction form
   8,200.72/12,298.52 = 2,355.76/x
3. Step 3: Cross multiply
   8,200.72x = 12,298.52 × 2,355.76
4. Step 4: Simplify right side
   8,200.72x = 28,972,361.48
5. Step 5: Solve for x
   x = 28,972,361.48/8,200.72
6. Step 6: Final answer
   x = 3,532.90