Finding the Fourth Proportional to 10,545.69, 15,821.28 and 3,150.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,545.69 : 15,821.28 = 3,150.15 : x
2. Step 2: Convert to fraction form
   10,545.69/15,821.28 = 3,150.15/x
3. Step 3: Cross multiply
   10,545.69x = 15,821.28 × 3,150.15
4. Step 4: Simplify right side
   10,545.69x = 49,839,405.19
5. Step 5: Solve for x
   x = 49,839,405.19/10,545.69
6. Step 6: Final answer
   x = 4,726.04