Finding the Fourth Proportional to 10,685.10, 16,028.19 and 3,665.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,685.10 : 16,028.19 = 3,665.94 : x
2. Step 2: Convert to fraction form
   10,685.10/16,028.19 = 3,665.94/x
3. Step 3: Cross multiply
   10,685.10x = 16,028.19 × 3,665.94
4. Step 4: Simplify right side
   10,685.10x = 58,758,382.85
5. Step 5: Solve for x
   x = 58,758,382.85/10,685.10
6. Step 6: Final answer
   x = 5,499.10