Finding the Fourth Proportional to 3,906.81, 5,829.93 and 3,557.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.81 : 5,829.93 = 3,557.58 : x
2. Step 2: Convert to fraction form
   3,906.81/5,829.93 = 3,557.58/x
3. Step 3: Cross multiply
   3,906.81x = 5,829.93 × 3,557.58
4. Step 4: Simplify right side
   3,906.81x = 20,740,442.37
5. Step 5: Solve for x
   x = 20,740,442.37/3,906.81
6. Step 6: Final answer
   x = 5,308.79