Finding the Fourth Proportional to 9,164.75, 12,647.22 and 5,388.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,164.75 : 12,647.22 = 5,388.34 : x
2. Step 2: Convert to fraction form
   9,164.75/12,647.22 = 5,388.34/x
3. Step 3: Cross multiply
   9,164.75x = 12,647.22 × 5,388.34
4. Step 4: Simplify right side
   9,164.75x = 68,147,521.41
5. Step 5: Solve for x
   x = 68,147,521.41/9,164.75
6. Step 6: Final answer
   x = 7,435.83