Finding the Fourth Proportional to 12,105.42, 16,705.69 and 6,728.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105.42 : 16,705.69 = 6,728.34 : x
2. Step 2: Convert to fraction form
   12,105.42/16,705.69 = 6,728.34/x
3. Step 3: Cross multiply
   12,105.42x = 16,705.69 × 6,728.34
4. Step 4: Simplify right side
   12,105.42x = 112,401,562.25
5. Step 5: Solve for x
   x = 112,401,562.25/12,105.42
6. Step 6: Final answer
   x = 9,285.23