Finding the Fourth Proportional to 8,989.89, 12,406.29 and 5,011.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,989.89 : 12,406.29 = 5,011.27 : x
2. Step 2: Convert to fraction form
   8,989.89/12,406.29 = 5,011.27/x
3. Step 3: Cross multiply
   8,989.89x = 12,406.29 × 5,011.27
4. Step 4: Simplify right side
   8,989.89x = 62,171,233.17
5. Step 5: Solve for x
   x = 62,171,233.17/8,989.89
6. Step 6: Final answer
   x = 6,915.69