Finding the Fourth Proportional to 10,962.81, 16,439.96 and 3,940.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,962.81 : 16,439.96 = 3,940.92 : x
2. Step 2: Convert to fraction form
   10,962.81/16,439.96 = 3,940.92/x
3. Step 3: Cross multiply
   10,962.81x = 16,439.96 × 3,940.92
4. Step 4: Simplify right side
   10,962.81x = 64,788,577.02
5. Step 5: Solve for x
   x = 64,788,577.02/10,962.81
6. Step 6: Final answer
   x = 5,909.85