Finding the Fourth Proportional to 9,148.09, 12,624.61 and 5,169.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,148.09 : 12,624.61 = 5,169.12 : x
2. Step 2: Convert to fraction form
   9,148.09/12,624.61 = 5,169.12/x
3. Step 3: Cross multiply
   9,148.09x = 12,624.61 × 5,169.12
4. Step 4: Simplify right side
   9,148.09x = 65,258,035.07
5. Step 5: Solve for x
   x = 65,258,035.07/9,148.09
6. Step 6: Final answer
   x = 7,133.52