Finding the Fourth Proportional to 3,728.22, 5,565.20 and 3,457.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,728.22 : 5,565.20 = 3,457.98 : x
2. Step 2: Convert to fraction form
   3,728.22/5,565.20 = 3,457.98/x
3. Step 3: Cross multiply
   3,728.22x = 5,565.20 × 3,457.98
4. Step 4: Simplify right side
   3,728.22x = 19,244,333.01
5. Step 5: Solve for x
   x = 19,244,333.01/3,728.22
6. Step 6: Final answer
   x = 5,161.80