Finding the Fourth Proportional to 3,708.05, 5,540.36 and 3,578.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,708.05 : 5,540.36 = 3,578.94 : x
2. Step 2: Convert to fraction form
   3,708.05/5,540.36 = 3,578.94/x
3. Step 3: Cross multiply
   3,708.05x = 5,540.36 × 3,578.94
4. Step 4: Simplify right side
   3,708.05x = 19,828,598.12
5. Step 5: Solve for x
   x = 19,828,598.12/3,708.05
6. Step 6: Final answer
   x = 5,347.45