Finding the Fourth Proportional to 5,401.81, 8,102.71 and 3,091.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,401.81 : 8,102.71 = 3,091.69 : x
2. Step 2: Convert to fraction form
   5,401.81/8,102.71 = 3,091.69/x
3. Step 3: Cross multiply
   5,401.81x = 8,102.71 × 3,091.69
4. Step 4: Simplify right side
   5,401.81x = 25,051,067.48
5. Step 5: Solve for x
   x = 25,051,067.48/5,401.81
6. Step 6: Final answer
   x = 4,637.53