Finding the Fourth Proportional to 9,148.91, 12,625.60 and 5,372.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,148.91 : 12,625.60 = 5,372.12 : x
2. Step 2: Convert to fraction form
   9,148.91/12,625.60 = 5,372.12/x
3. Step 3: Cross multiply
   9,148.91x = 12,625.60 × 5,372.12
4. Step 4: Simplify right side
   9,148.91x = 67,826,251.37
5. Step 5: Solve for x
   x = 67,826,251.37/9,148.91
6. Step 6: Final answer
   x = 7,413.59