Finding the Fourth Proportional to 11,406.48, 17,109.81 and 3,086.57

Step by Step Solution

1. Step 1: Write the proportion equation
   11,406.48 : 17,109.81 = 3,086.57 : x
2. Step 2: Convert to fraction form
   11,406.48/17,109.81 = 3,086.57/x
3. Step 3: Cross multiply
   11,406.48x = 17,109.81 × 3,086.57
4. Step 4: Simplify right side
   11,406.48x = 52,810,540.70
5. Step 5: Solve for x
   x = 52,810,540.70/11,406.48
6. Step 6: Final answer
   x = 4,629.87