Finding the Fourth Proportional to 5,865.28, 8,799.99 and 3,898.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,865.28 : 8,799.99 = 3,898.72 : x
2. Step 2: Convert to fraction form
   5,865.28/8,799.99 = 3,898.72/x
3. Step 3: Cross multiply
   5,865.28x = 8,799.99 × 3,898.72
4. Step 4: Simplify right side
   5,865.28x = 34,308,693.39
5. Step 5: Solve for x
   x = 34,308,693.39/5,865.28
6. Step 6: Final answer
   x = 5,849.46