Finding the Fourth Proportional to 5,077.30, 7,007.33 and 2,839.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,077.30 : 7,007.33 = 2,839.30 : x
2. Step 2: Convert to fraction form
   5,077.30/7,007.33 = 2,839.30/x
3. Step 3: Cross multiply
   5,077.30x = 7,007.33 × 2,839.30
4. Step 4: Simplify right side
   5,077.30x = 19,895,926.04
5. Step 5: Solve for x
   x = 19,895,926.04/5,077.30
6. Step 6: Final answer
   x = 3,918.60