Finding the Fourth Proportional to 5,139.48, 7,085.61 and 3,725.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.48 : 7,085.61 = 3,725.22 : x
2. Step 2: Convert to fraction form
   5,139.48/7,085.61 = 3,725.22/x
3. Step 3: Cross multiply
   5,139.48x = 7,085.61 × 3,725.22
4. Step 4: Simplify right side
   5,139.48x = 26,395,456.08
5. Step 5: Solve for x
   x = 26,395,456.08/5,139.48
6. Step 6: Final answer
   x = 5,135.82