Finding the Fourth Proportional to 8,401.45, 12,601.67 and 3,720.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,401.45 : 12,601.67 = 3,720.10 : x
2. Step 2: Convert to fraction form
   8,401.45/12,601.67 = 3,720.10/x
3. Step 3: Cross multiply
   8,401.45x = 12,601.67 × 3,720.10
4. Step 4: Simplify right side
   8,401.45x = 46,879,390.96
5. Step 5: Solve for x
   x = 46,879,390.96/8,401.45
6. Step 6: Final answer
   x = 5,579.92