Finding the Fourth Proportional to 9,005.38, 12,426.60 and 5,647.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,005.38 : 12,426.60 = 5,647.12 : x
2. Step 2: Convert to fraction form
   9,005.38/12,426.60 = 5,647.12/x
3. Step 3: Cross multiply
   9,005.38x = 12,426.60 × 5,647.12
4. Step 4: Simplify right side
   9,005.38x = 70,174,501.39
5. Step 5: Solve for x
   x = 70,174,501.39/9,005.38
6. Step 6: Final answer
   x = 7,792.51