Finding the Fourth Proportional to 10,452.24, 15,678.56 and 2,661.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,452.24 : 15,678.56 = 2,661.05 : x
2. Step 2: Convert to fraction form
   10,452.24/15,678.56 = 2,661.05/x
3. Step 3: Cross multiply
   10,452.24x = 15,678.56 × 2,661.05
4. Step 4: Simplify right side
   10,452.24x = 41,721,477.94
5. Step 5: Solve for x
   x = 41,721,477.94/10,452.24
6. Step 6: Final answer
   x = 3,991.63