Finding the Fourth Proportional to 11,405.68, 17,108.43 and 3,086.54

Step by Step Solution

1. Step 1: Write the proportion equation
   11,405.68 : 17,108.43 = 3,086.54 : x
2. Step 2: Convert to fraction form
   11,405.68/17,108.43 = 3,086.54/x
3. Step 3: Cross multiply
   11,405.68x = 17,108.43 × 3,086.54
4. Step 4: Simplify right side
   11,405.68x = 52,805,820.57
5. Step 5: Solve for x
   x = 52,805,820.57/11,405.68
6. Step 6: Final answer
   x = 4,629.78