Finding the Fourth Proportional to 13,085.40, 19,625.17 and 3,725.21

Step by Step Solution

1. Step 1: Write the proportion equation
   13,085.40 : 19,625.17 = 3,725.21 : x
2. Step 2: Convert to fraction form
   13,085.40/19,625.17 = 3,725.21/x
3. Step 3: Cross multiply
   13,085.40x = 19,625.17 × 3,725.21
4. Step 4: Simplify right side
   13,085.40x = 73,107,879.54
5. Step 5: Solve for x
   x = 73,107,879.54/13,085.40
6. Step 6: Final answer
   x = 5,586.98