Finding the Fourth Proportional to 5,445.28, 8,162.34 and 3,690.46

Step by Step Solution

1. Step 1: Write the proportion equation
   5,445.28 : 8,162.34 = 3,690.46 : x
2. Step 2: Convert to fraction form
   5,445.28/8,162.34 = 3,690.46/x
3. Step 3: Cross multiply
   5,445.28x = 8,162.34 × 3,690.46
4. Step 4: Simplify right side
   5,445.28x = 30,122,789.28
5. Step 5: Solve for x
   x = 30,122,789.28/5,445.28
6. Step 6: Final answer
   x = 5,531.91