Finding the Fourth Proportional to 10,665.18, 14,716.98 and 6,189.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,665.18 : 14,716.98 = 6,189.12 : x
2. Step 2: Convert to fraction form
   10,665.18/14,716.98 = 6,189.12/x
3. Step 3: Cross multiply
   10,665.18x = 14,716.98 × 6,189.12
4. Step 4: Simplify right side
   10,665.18x = 91,085,155.26
5. Step 5: Solve for x
   x = 91,085,155.26/10,665.18
6. Step 6: Final answer
   x = 8,540.42