Finding the Fourth Proportional to 5,401.88, 7,457.09 and 3,809.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,401.88 : 7,457.09 = 3,809.82 : x
2. Step 2: Convert to fraction form
   5,401.88/7,457.09 = 3,809.82/x
3. Step 3: Cross multiply
   5,401.88x = 7,457.09 × 3,809.82
4. Step 4: Simplify right side
   5,401.88x = 28,410,151.57
5. Step 5: Solve for x
   x = 28,410,151.57/5,401.88
6. Step 6: Final answer
   x = 5,259.31