Finding the Fourth Proportional to 11,101.27, 16,660.12 and 5,257.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,101.27 : 16,660.12 = 5,257.89 : x
2. Step 2: Convert to fraction form
   11,101.27/16,660.12 = 5,257.89/x
3. Step 3: Cross multiply
   11,101.27x = 16,660.12 × 5,257.89
4. Step 4: Simplify right side
   11,101.27x = 87,597,096.44
5. Step 5: Solve for x
   x = 87,597,096.44/11,101.27
6. Step 6: Final answer
   x = 7,890.73