Finding the Fourth Proportional to 9,105.40, 12,568.97 and 7,116.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.40 : 12,568.97 = 7,116.59 : x
2. Step 2: Convert to fraction form
   9,105.40/12,568.97 = 7,116.59/x
3. Step 3: Cross multiply
   9,105.40x = 12,568.97 × 7,116.59
4. Step 4: Simplify right side
   9,105.40x = 89,448,255.43
5. Step 5: Solve for x
   x = 89,448,255.43/9,105.40
6. Step 6: Final answer
   x = 9,823.65