Finding the Fourth Proportional to 8,989.38, 12,405.17 and 5,010.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,989.38 : 12,405.17 = 5,010.42 : x
2. Step 2: Convert to fraction form
   8,989.38/12,405.17 = 5,010.42/x
3. Step 3: Cross multiply
   8,989.38x = 12,405.17 × 5,010.42
4. Step 4: Simplify right side
   8,989.38x = 62,155,086.82
5. Step 5: Solve for x
   x = 62,155,086.82/8,989.38
6. Step 6: Final answer
   x = 6,914.28