Finding the Fourth Proportional to 3,521.94, 5,313.89 and 3,492.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,521.94 : 5,313.89 = 3,492.78 : x
2. Step 2: Convert to fraction form
   3,521.94/5,313.89 = 3,492.78/x
3. Step 3: Cross multiply
   3,521.94x = 5,313.89 × 3,492.78
4. Step 4: Simplify right side
   3,521.94x = 18,560,231.25
5. Step 5: Solve for x
   x = 18,560,231.25/3,521.94
6. Step 6: Final answer
   x = 5,269.89