Finding the Fourth Proportional to 3,571.56, 5,365.58 and 3,423.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,571.56 : 5,365.58 = 3,423.94 : x
2. Step 2: Convert to fraction form
   3,571.56/5,365.58 = 3,423.94/x
3. Step 3: Cross multiply
   3,571.56x = 5,365.58 × 3,423.94
4. Step 4: Simplify right side
   3,571.56x = 18,371,393.45
5. Step 5: Solve for x
   x = 18,371,393.45/3,571.56
6. Step 6: Final answer
   x = 5,143.80