Finding the Fourth Proportional to 10,452.99, 15,679.38 and 2,661.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,452.99 : 15,679.38 = 2,661.72 : x
2. Step 2: Convert to fraction form
   10,452.99/15,679.38 = 2,661.72/x
3. Step 3: Cross multiply
   10,452.99x = 15,679.38 × 2,661.72
4. Step 4: Simplify right side
   10,452.99x = 41,734,119.33
5. Step 5: Solve for x
   x = 41,734,119.33/10,452.99
6. Step 6: Final answer
   x = 3,992.55