Finding the Fourth Proportional to 10,981.40, 16,472.06 and 2,661.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,981.40 : 16,472.06 = 2,661.46 : x
2. Step 2: Convert to fraction form
   10,981.40/16,472.06 = 2,661.46/x
3. Step 3: Cross multiply
   10,981.40x = 16,472.06 × 2,661.46
4. Step 4: Simplify right side
   10,981.40x = 43,839,684.30
5. Step 5: Solve for x
   x = 43,839,684.30/10,981.40
6. Step 6: Final answer
   x = 3,992.18