Finding the Fourth Proportional to 10,936.42, 16,400.60 and 3,914.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,936.42 : 16,400.60 = 3,914.53 : x
2. Step 2: Convert to fraction form
   10,936.42/16,400.60 = 3,914.53/x
3. Step 3: Cross multiply
   10,936.42x = 16,400.60 × 3,914.53
4. Step 4: Simplify right side
   10,936.42x = 64,200,640.72
5. Step 5: Solve for x
   x = 64,200,640.72/10,936.42
6. Step 6: Final answer
   x = 5,870.35