Finding the Fourth Proportional to 6,401.87, 9,607.15 and 3,929.14

Step by Step Solution

1. Step 1: Write the proportion equation
   6,401.87 : 9,607.15 = 3,929.14 : x
2. Step 2: Convert to fraction form
   6,401.87/9,607.15 = 3,929.14/x
3. Step 3: Cross multiply
   6,401.87x = 9,607.15 × 3,929.14
4. Step 4: Simplify right side
   6,401.87x = 37,747,803.51
5. Step 5: Solve for x
   x = 37,747,803.51/6,401.87
6. Step 6: Final answer
   x = 5,896.38