Finding the Fourth Proportional to 5,196.72, 7,171.40 and 2,838.84

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.72 : 7,171.40 = 2,838.84 : x
2. Step 2: Convert to fraction form
   5,196.72/7,171.40 = 2,838.84/x
3. Step 3: Cross multiply
   5,196.72x = 7,171.40 × 2,838.84
4. Step 4: Simplify right side
   5,196.72x = 20,358,457.18
5. Step 5: Solve for x
   x = 20,358,457.18/5,196.72
6. Step 6: Final answer
   x = 3,917.56