Finding the Fourth Proportional to 10,936.16, 16,404.49 and 3,916.65

Step by Step Solution

1. Step 1: Write the proportion equation
   10,936.16 : 16,404.49 = 3,916.65 : x
2. Step 2: Convert to fraction form
   10,936.16/16,404.49 = 3,916.65/x
3. Step 3: Cross multiply
   10,936.16x = 16,404.49 × 3,916.65
4. Step 4: Simplify right side
   10,936.16x = 64,250,626.18
5. Step 5: Solve for x
   x = 64,250,626.18/10,936.16
6. Step 6: Final answer
   x = 5,875.07