Finding the Fourth Proportional to 9,105.35, 12,568.16 and 5,329.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.35 : 12,568.16 = 5,329.40 : x
2. Step 2: Convert to fraction form
   9,105.35/12,568.16 = 5,329.40/x
3. Step 3: Cross multiply
   9,105.35x = 12,568.16 × 5,329.40
4. Step 4: Simplify right side
   9,105.35x = 66,980,702.39
5. Step 5: Solve for x
   x = 66,980,702.39/9,105.35
6. Step 6: Final answer
   x = 7,356.20