Finding the Fourth Proportional to 5,012.38, 7,520.91 and 2,238.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,012.38 : 7,520.91 = 2,238.78 : x
2. Step 2: Convert to fraction form
   5,012.38/7,520.91 = 2,238.78/x
3. Step 3: Cross multiply
   5,012.38x = 7,520.91 × 2,238.78
4. Step 4: Simplify right side
   5,012.38x = 16,837,662.89
5. Step 5: Solve for x
   x = 16,837,662.89/5,012.38
6. Step 6: Final answer
   x = 3,359.22