Finding the Fourth Proportional to 3,492.69, 5,229.69 and 2,939.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,492.69 : 5,229.69 = 2,939.10 : x
2. Step 2: Convert to fraction form
   3,492.69/5,229.69 = 2,939.10/x
3. Step 3: Cross multiply
   3,492.69x = 5,229.69 × 2,939.10
4. Step 4: Simplify right side
   3,492.69x = 15,370,581.88
5. Step 5: Solve for x
   x = 15,370,581.88/3,492.69
6. Step 6: Final answer
   x = 4,400.79