Finding the Fourth Proportional to 5,196.40, 7,170.96 and 2,838.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.40 : 7,170.96 = 2,838.50 : x
2. Step 2: Convert to fraction form
   5,196.40/7,170.96 = 2,838.50/x
3. Step 3: Cross multiply
   5,196.40x = 7,170.96 × 2,838.50
4. Step 4: Simplify right side
   5,196.40x = 20,354,769.96
5. Step 5: Solve for x
   x = 20,354,769.96/5,196.40
6. Step 6: Final answer
   x = 3,917.09