Finding the Fourth Proportional to 5,805.72, 8,710.50 and 3,865.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,805.72 : 8,710.50 = 3,865.56 : x
2. Step 2: Convert to fraction form
   5,805.72/8,710.50 = 3,865.56/x
3. Step 3: Cross multiply
   5,805.72x = 8,710.50 × 3,865.56
4. Step 4: Simplify right side
   5,805.72x = 33,670,960.38
5. Step 5: Solve for x
   x = 33,670,960.38/5,805.72
6. Step 6: Final answer
   x = 5,799.62