Finding the Fourth Proportional to 5,185.80, 7,156.15 and 3,196.54

Step by Step Solution

1. Step 1: Write the proportion equation
   5,185.80 : 7,156.15 = 3,196.54 : x
2. Step 2: Convert to fraction form
   5,185.80/7,156.15 = 3,196.54/x
3. Step 3: Cross multiply
   5,185.80x = 7,156.15 × 3,196.54
4. Step 4: Simplify right side
   5,185.80x = 22,874,919.72
5. Step 5: Solve for x
   x = 22,874,919.72/5,185.80
6. Step 6: Final answer
   x = 4,411.07