Finding the Fourth Proportional to 5,288.71, 7,908.78 and 3,887.44

Step by Step Solution

1. Step 1: Write the proportion equation
   5,288.71 : 7,908.78 = 3,887.44 : x
2. Step 2: Convert to fraction form
   5,288.71/7,908.78 = 3,887.44/x
3. Step 3: Cross multiply
   5,288.71x = 7,908.78 × 3,887.44
4. Step 4: Simplify right side
   5,288.71x = 30,744,907.72
5. Step 5: Solve for x
   x = 30,744,907.72/5,288.71
6. Step 6: Final answer
   x = 5,813.31