Finding the Fourth Proportional to 10,936.69, 16,404.90 and 3,145.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,936.69 : 16,404.90 = 3,145.57 : x
2. Step 2: Convert to fraction form
   10,936.69/16,404.90 = 3,145.57/x
3. Step 3: Cross multiply
   10,936.69x = 16,404.90 × 3,145.57
4. Step 4: Simplify right side
   10,936.69x = 51,602,761.29
5. Step 5: Solve for x
   x = 51,602,761.29/10,936.69
6. Step 6: Final answer
   x = 4,718.32