Finding the Fourth Proportional to 10,665.22, 15,998.64 and 2,874.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,665.22 : 15,998.64 = 2,874.10 : x
2. Step 2: Convert to fraction form
   10,665.22/15,998.64 = 2,874.10/x
3. Step 3: Cross multiply
   10,665.22x = 15,998.64 × 2,874.10
4. Step 4: Simplify right side
   10,665.22x = 45,981,691.22
5. Step 5: Solve for x
   x = 45,981,691.22/10,665.22
6. Step 6: Final answer
   x = 4,311.37