Finding the Fourth Proportional to 10,540.36, 15,812.82 and 3,145.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,540.36 : 15,812.82 = 3,145.42 : x
2. Step 2: Convert to fraction form
   10,540.36/15,812.82 = 3,145.42/x
3. Step 3: Cross multiply
   10,540.36x = 15,812.82 × 3,145.42
4. Step 4: Simplify right side
   10,540.36x = 49,737,960.28
5. Step 5: Solve for x
   x = 49,737,960.28/10,540.36
6. Step 6: Final answer
   x = 4,718.81