Finding the Fourth Proportional to 10,149.69, 15,224.34 and 3,911.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,149.69 : 15,224.34 = 3,911.05 : x
2. Step 2: Convert to fraction form
   10,149.69/15,224.34 = 3,911.05/x
3. Step 3: Cross multiply
   10,149.69x = 15,224.34 × 3,911.05
4. Step 4: Simplify right side
   10,149.69x = 59,543,154.96
5. Step 5: Solve for x
   x = 59,543,154.96/10,149.69
6. Step 6: Final answer
   x = 5,866.50