Finding the Fourth Proportional to 6,080.05, 8,390.55 and 3,689.34

Step by Step Solution

1. Step 1: Write the proportion equation
   6,080.05 : 8,390.55 = 3,689.34 : x
2. Step 2: Convert to fraction form
   6,080.05/8,390.55 = 3,689.34/x
3. Step 3: Cross multiply
   6,080.05x = 8,390.55 × 3,689.34
4. Step 4: Simplify right side
   6,080.05x = 30,955,591.74
5. Step 5: Solve for x
   x = 30,955,591.74/6,080.05
6. Step 6: Final answer
   x = 5,091.34