Finding the Fourth Proportional to 10,287.40, 14,196.62 and 5,811.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.40 : 14,196.62 = 5,811.16 : x
2. Step 2: Convert to fraction form
   10,287.40/14,196.62 = 5,811.16/x
3. Step 3: Cross multiply
   10,287.40x = 14,196.62 × 5,811.16
4. Step 4: Simplify right side
   10,287.40x = 82,498,830.28
5. Step 5: Solve for x
   x = 82,498,830.28/10,287.40
6. Step 6: Final answer
   x = 8,019.41