Finding the Fourth Proportional to 5,196.61, 7,171.29 and 2,838.73

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.61 : 7,171.29 = 2,838.73 : x
2. Step 2: Convert to fraction form
   5,196.61/7,171.29 = 2,838.73/x
3. Step 3: Cross multiply
   5,196.61x = 7,171.29 × 2,838.73
4. Step 4: Simplify right side
   5,196.61x = 20,357,365.03
5. Step 5: Solve for x
   x = 20,357,365.03/5,196.61
6. Step 6: Final answer
   x = 3,917.43