Finding the Fourth Proportional to 5,081.42, 7,012.30 and 2,843.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,081.42 : 7,012.30 = 2,843.30 : x
2. Step 2: Convert to fraction form
   5,081.42/7,012.30 = 2,843.30/x
3. Step 3: Cross multiply
   5,081.42x = 7,012.30 × 2,843.30
4. Step 4: Simplify right side
   5,081.42x = 19,938,072.59
5. Step 5: Solve for x
   x = 19,938,072.59/5,081.42
6. Step 6: Final answer
   x = 3,923.72