Finding the Fourth Proportional to 9,351.72, 12,906.57 and 5,373.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,351.72 : 12,906.57 = 5,373.61 : x
2. Step 2: Convert to fraction form
   9,351.72/12,906.57 = 5,373.61/x
3. Step 3: Cross multiply
   9,351.72x = 12,906.57 × 5,373.61
4. Step 4: Simplify right side
   9,351.72x = 69,354,873.62
5. Step 5: Solve for x
   x = 69,354,873.62/9,351.72
6. Step 6: Final answer
   x = 7,416.27