Finding the Fourth Proportional to 10,892.12, 16,334.94 and 3,965

Step by Step Solution

1. Step 1: Write the proportion equation
   10,892.12 : 16,334.94 = 3,965 : x
2. Step 2: Convert to fraction form
   10,892.12/16,334.94 = 3,965/x
3. Step 3: Cross multiply
   10,892.12x = 16,334.94 × 3,965
4. Step 4: Simplify right side
   10,892.12x = 64,768,037.10
5. Step 5: Solve for x
   x = 64,768,037.10/10,892.12
6. Step 6: Final answer
   x = 5,946.32