Finding the Fourth Proportional to 5,169.48, 7,131.56 and 3,072.38

Step by Step Solution

1. Step 1: Write the proportion equation
   5,169.48 : 7,131.56 = 3,072.38 : x
2. Step 2: Convert to fraction form
   5,169.48/7,131.56 = 3,072.38/x
3. Step 3: Cross multiply
   5,169.48x = 7,131.56 × 3,072.38
4. Step 4: Simplify right side
   5,169.48x = 21,910,862.31
5. Step 5: Solve for x
   x = 21,910,862.31/5,169.48
6. Step 6: Final answer
   x = 4,238.50