Finding the Fourth Proportional to 5,196.72, 7,171.53 and 2,838.87

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.72 : 7,171.53 = 2,838.87 : x
2. Step 2: Convert to fraction form
   5,196.72/7,171.53 = 2,838.87/x
3. Step 3: Cross multiply
   5,196.72x = 7,171.53 × 2,838.87
4. Step 4: Simplify right side
   5,196.72x = 20,359,041.37
5. Step 5: Solve for x
   x = 20,359,041.37/5,196.72
6. Step 6: Final answer
   x = 3,917.67