Finding the Fourth Proportional to 3,891.31, 5,809.25 and 3,754.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,891.31 : 5,809.25 = 3,754.62 : x
2. Step 2: Convert to fraction form
   3,891.31/5,809.25 = 3,754.62/x
3. Step 3: Cross multiply
   3,891.31x = 5,809.25 × 3,754.62
4. Step 4: Simplify right side
   3,891.31x = 21,811,535.62
5. Step 5: Solve for x
   x = 21,811,535.62/3,891.31
6. Step 6: Final answer
   x = 5,605.19