Finding the Fourth Proportional to 6,388.69, 9,564.49 and 3,916.03

Step by Step Solution

1. Step 1: Write the proportion equation
   6,388.69 : 9,564.49 = 3,916.03 : x
2. Step 2: Convert to fraction form
   6,388.69/9,564.49 = 3,916.03/x
3. Step 3: Cross multiply
   6,388.69x = 9,564.49 × 3,916.03
4. Step 4: Simplify right side
   6,388.69x = 37,454,829.77
5. Step 5: Solve for x
   x = 37,454,829.77/6,388.69
6. Step 6: Final answer
   x = 5,862.68