Finding the Fourth Proportional to 9,148.39, 12,624.12 and 5,371.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,148.39 : 12,624.12 = 5,371.72 : x
2. Step 2: Convert to fraction form
   9,148.39/12,624.12 = 5,371.72/x
3. Step 3: Cross multiply
   9,148.39x = 12,624.12 × 5,371.72
4. Step 4: Simplify right side
   9,148.39x = 67,813,206.33
5. Step 5: Solve for x
   x = 67,813,206.33/9,148.39
6. Step 6: Final answer
   x = 7,412.59