Finding the Fourth Proportional to 5,406.87, 7,457.15 and 3,727.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,406.87 : 7,457.15 = 3,727.89 : x
2. Step 2: Convert to fraction form
   5,406.87/7,457.15 = 3,727.89/x
3. Step 3: Cross multiply
   5,406.87x = 7,457.15 × 3,727.89
4. Step 4: Simplify right side
   5,406.87x = 27,799,434.91
5. Step 5: Solve for x
   x = 27,799,434.91/5,406.87
6. Step 6: Final answer
   x = 5,141.50