Finding the Fourth Proportional to 5,681.30, 7,836.55 and 3,667.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,681.30 : 7,836.55 = 3,667.28 : x
2. Step 2: Convert to fraction form
   5,681.30/7,836.55 = 3,667.28/x
3. Step 3: Cross multiply
   5,681.30x = 7,836.55 × 3,667.28
4. Step 4: Simplify right side
   5,681.30x = 28,738,774.73
5. Step 5: Solve for x
   x = 28,738,774.73/5,681.30
6. Step 6: Final answer
   x = 5,058.49