Finding the Fourth Proportional to 9,170.30, 12,655.06 and 5,393.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,170.30 : 12,655.06 = 5,393.62 : x
2. Step 2: Convert to fraction form
   9,170.30/12,655.06 = 5,393.62/x
3. Step 3: Cross multiply
   9,170.30x = 12,655.06 × 5,393.62
4. Step 4: Simplify right side
   9,170.30x = 68,256,584.72
5. Step 5: Solve for x
   x = 68,256,584.72/9,170.30
6. Step 6: Final answer
   x = 7,443.23