Finding the Fourth Proportional to 5,196.86, 7,171.35 and 2,838.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.86 : 7,171.35 = 2,838.86 : x
2. Step 2: Convert to fraction form
   5,196.86/7,171.35 = 2,838.86/x
3. Step 3: Cross multiply
   5,196.86x = 7,171.35 × 2,838.86
4. Step 4: Simplify right side
   5,196.86x = 20,358,458.66
5. Step 5: Solve for x
   x = 20,358,458.66/5,196.86
6. Step 6: Final answer
   x = 3,917.45