Finding the Fourth Proportional to 10,929.04, 16,387.90 and 3,906.36

Step by Step Solution

1. Step 1: Write the proportion equation
   10,929.04 : 16,387.90 = 3,906.36 : x
2. Step 2: Convert to fraction form
   10,929.04/16,387.90 = 3,906.36/x
3. Step 3: Cross multiply
   10,929.04x = 16,387.90 × 3,906.36
4. Step 4: Simplify right side
   10,929.04x = 64,017,037.04
5. Step 5: Solve for x
   x = 64,017,037.04/10,929.04
6. Step 6: Final answer
   x = 5,857.52