Finding the Fourth Proportional to 5,196.38, 7,171.16 and 2,838.67

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.38 : 7,171.16 = 2,838.67 : x
2. Step 2: Convert to fraction form
   5,196.38/7,171.16 = 2,838.67/x
3. Step 3: Cross multiply
   5,196.38x = 7,171.16 × 2,838.67
4. Step 4: Simplify right side
   5,196.38x = 20,356,524.64
5. Step 5: Solve for x
   x = 20,356,524.64/5,196.38
6. Step 6: Final answer
   x = 3,917.45