Finding the Fourth Proportional to 10,981.55, 16,472.36 and 2,661.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,981.55 : 16,472.36 = 2,661.54 : x
2. Step 2: Convert to fraction form
   10,981.55/16,472.36 = 2,661.54/x
3. Step 3: Cross multiply
   10,981.55x = 16,472.36 × 2,661.54
4. Step 4: Simplify right side
   10,981.55x = 43,841,789.92
5. Step 5: Solve for x
   x = 43,841,789.92/10,981.55
6. Step 6: Final answer
   x = 3,992.31