Finding the Fourth Proportional to 5,581.58, 7,694.88 and 5,409.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,581.58 : 7,694.88 = 5,409.05 : x
2. Step 2: Convert to fraction form
   5,581.58/7,694.88 = 5,409.05/x
3. Step 3: Cross multiply
   5,581.58x = 7,694.88 × 5,409.05
4. Step 4: Simplify right side
   5,581.58x = 41,621,990.66
5. Step 5: Solve for x
   x = 41,621,990.66/5,581.58
6. Step 6: Final answer
   x = 7,457.03