Finding the Fourth Proportional to 5,928.56, 8,181.09 and 3,690.38

Step by Step Solution

1. Step 1: Write the proportion equation
   5,928.56 : 8,181.09 = 3,690.38 : x
2. Step 2: Convert to fraction form
   5,928.56/8,181.09 = 3,690.38/x
3. Step 3: Cross multiply
   5,928.56x = 8,181.09 × 3,690.38
4. Step 4: Simplify right side
   5,928.56x = 30,191,330.91
5. Step 5: Solve for x
   x = 30,191,330.91/5,928.56
6. Step 6: Final answer
   x = 5,092.52