Finding the Fourth Proportional to 4,868.57, 7,296.69 and 3,112.90

Step by Step Solution

1. Step 1: Write the proportion equation
   4,868.57 : 7,296.69 = 3,112.90 : x
2. Step 2: Convert to fraction form
   4,868.57/7,296.69 = 3,112.90/x
3. Step 3: Cross multiply
   4,868.57x = 7,296.69 × 3,112.90
4. Step 4: Simplify right side
   4,868.57x = 22,713,866.30
5. Step 5: Solve for x
   x = 22,713,866.30/4,868.57
6. Step 6: Final answer
   x = 4,665.41