Finding the Fourth Proportional to 10,936.49, 16,400.34 and 3,914.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,936.49 : 16,400.34 = 3,914.10 : x
2. Step 2: Convert to fraction form
   10,936.49/16,400.34 = 3,914.10/x
3. Step 3: Cross multiply
   10,936.49x = 16,400.34 × 3,914.10
4. Step 4: Simplify right side
   10,936.49x = 64,192,570.79
5. Step 5: Solve for x
   x = 64,192,570.79/10,936.49
6. Step 6: Final answer
   x = 5,869.58