Finding the Fourth Proportional to 3,620.16, 5,457.38 and 3,379.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,620.16 : 5,457.38 = 3,379.05 : x
2. Step 2: Convert to fraction form
   3,620.16/5,457.38 = 3,379.05/x
3. Step 3: Cross multiply
   3,620.16x = 5,457.38 × 3,379.05
4. Step 4: Simplify right side
   3,620.16x = 18,440,759.89
5. Step 5: Solve for x
   x = 18,440,759.89/3,620.16
6. Step 6: Final answer
   x = 5,093.91