Finding the Fourth Proportional to 9,176.72, 12,659.22 and 5,397.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,176.72 : 12,659.22 = 5,397.46 : x
2. Step 2: Convert to fraction form
   9,176.72/12,659.22 = 5,397.46/x
3. Step 3: Cross multiply
   9,176.72x = 12,659.22 × 5,397.46
4. Step 4: Simplify right side
   9,176.72x = 68,327,601.93
5. Step 5: Solve for x
   x = 68,327,601.93/9,176.72
6. Step 6: Final answer
   x = 7,445.76