Finding the Fourth Proportional to 3,557.43, 5,328.81 and 3,513.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,557.43 : 5,328.81 = 3,513.69 : x
2. Step 2: Convert to fraction form
   3,557.43/5,328.81 = 3,513.69/x
3. Step 3: Cross multiply
   3,557.43x = 5,328.81 × 3,513.69
4. Step 4: Simplify right side
   3,557.43x = 18,723,786.41
5. Step 5: Solve for x
   x = 18,723,786.41/3,557.43
6. Step 6: Final answer
   x = 5,263.29