Finding the Fourth Proportional to 9,356.39, 12,901.33 and 7,649.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,356.39 : 12,901.33 = 7,649.57 : x
2. Step 2: Convert to fraction form
   9,356.39/12,901.33 = 7,649.57/x
3. Step 3: Cross multiply
   9,356.39x = 12,901.33 × 7,649.57
4. Step 4: Simplify right side
   9,356.39x = 98,689,626.93
5. Step 5: Solve for x
   x = 98,689,626.93/9,356.39
6. Step 6: Final answer
   x = 10,547.83