Finding the Fourth Proportional to 10,775.56, 16,169.82 and 10,687.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,775.56 : 16,169.82 = 10,687.72 : x
2. Step 2: Convert to fraction form
   10,775.56/16,169.82 = 10,687.72/x
3. Step 3: Cross multiply
   10,775.56x = 16,169.82 × 10,687.72
4. Step 4: Simplify right side
   10,775.56x = 172,818,508.61
5. Step 5: Solve for x
   x = 172,818,508.61/10,775.56
6. Step 6: Final answer
   x = 16,038.01