Finding the Fourth Proportional to 10,986.17, 16,469.60 and 5,710.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,986.17 : 16,469.60 = 5,710.05 : x
2. Step 2: Convert to fraction form
   10,986.17/16,469.60 = 5,710.05/x
3. Step 3: Cross multiply
   10,986.17x = 16,469.60 × 5,710.05
4. Step 4: Simplify right side
   10,986.17x = 94,042,210.93
5. Step 5: Solve for x
   x = 94,042,210.93/10,986.17
6. Step 6: Final answer
   x = 8,560.06