Finding the Fourth Proportional to 10,354.56, 14,286.96 and 8,682.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,354.56 : 14,286.96 = 8,682.72 : x
2. Step 2: Convert to fraction form
   10,354.56/14,286.96 = 8,682.72/x
3. Step 3: Cross multiply
   10,354.56x = 14,286.96 × 8,682.72
4. Step 4: Simplify right side
   10,354.56x = 124,049,673.33
5. Step 5: Solve for x
   x = 124,049,673.33/10,354.56
6. Step 6: Final answer
   x = 11,980.20