Finding the Fourth Proportional to 12,200.72, 16,838.24 and 8,800.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,200.72 : 16,838.24 = 8,800.54 : x
2. Step 2: Convert to fraction form
   12,200.72/16,838.24 = 8,800.54/x
3. Step 3: Cross multiply
   12,200.72x = 16,838.24 × 8,800.54
4. Step 4: Simplify right side
   12,200.72x = 148,185,604.65
5. Step 5: Solve for x
   x = 148,185,604.65/12,200.72
6. Step 6: Final answer
   x = 12,145.64