Finding the Fourth Proportional to 11,103.72, 16,660.98 and 5,253.36

Step by Step Solution

1. Step 1: Write the proportion equation
   11,103.72 : 16,660.98 = 5,253.36 : x
2. Step 2: Convert to fraction form
   11,103.72/16,660.98 = 5,253.36/x
3. Step 3: Cross multiply
   11,103.72x = 16,660.98 × 5,253.36
4. Step 4: Simplify right side
   11,103.72x = 87,526,125.89
5. Step 5: Solve for x
   x = 87,526,125.89/11,103.72
6. Step 6: Final answer
   x = 7,882.59