Finding the Fourth Proportional to 3,646.94, 5,435.76 and 3,439.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,646.94 : 5,435.76 = 3,439.37 : x
2. Step 2: Convert to fraction form
   3,646.94/5,435.76 = 3,439.37/x
3. Step 3: Cross multiply
   3,646.94x = 5,435.76 × 3,439.37
4. Step 4: Simplify right side
   3,646.94x = 18,695,562.69
5. Step 5: Solve for x
   x = 18,695,562.69/3,646.94
6. Step 6: Final answer
   x = 5,126.38