Finding the Fourth Proportional to 10,440.47, 15,661.98 and 3,866.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,440.47 : 15,661.98 = 3,866.69 : x
2. Step 2: Convert to fraction form
   10,440.47/15,661.98 = 3,866.69/x
3. Step 3: Cross multiply
   10,440.47x = 15,661.98 × 3,866.69
4. Step 4: Simplify right side
   10,440.47x = 60,559,943.14
5. Step 5: Solve for x
   x = 60,559,943.14/10,440.47
6. Step 6: Final answer
   x = 5,800.50