Finding the Fourth Proportional to 10,986.89, 16,476.96 and 3,966.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,986.89 : 16,476.96 = 3,966.04 : x
2. Step 2: Convert to fraction form
   10,986.89/16,476.96 = 3,966.04/x
3. Step 3: Cross multiply
   10,986.89x = 16,476.96 × 3,966.04
4. Step 4: Simplify right side
   10,986.89x = 65,348,262.61
5. Step 5: Solve for x
   x = 65,348,262.61/10,986.89
6. Step 6: Final answer
   x = 5,947.84