Finding the Fourth Proportional to 12,213.56, 16,854.72 and 6,908.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,213.56 : 16,854.72 = 6,908.27 : x
2. Step 2: Convert to fraction form
   12,213.56/16,854.72 = 6,908.27/x
3. Step 3: Cross multiply
   12,213.56x = 16,854.72 × 6,908.27
4. Step 4: Simplify right side
   12,213.56x = 116,436,846.35
5. Step 5: Solve for x
   x = 116,436,846.35/12,213.56
6. Step 6: Final answer
   x = 9,533.41