Finding the Fourth Proportional to 11,013.76, 16,526.52 and 5,170.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,013.76 : 16,526.52 = 5,170.42 : x
2. Step 2: Convert to fraction form
   11,013.76/16,526.52 = 5,170.42/x
3. Step 3: Cross multiply
   11,013.76x = 16,526.52 × 5,170.42
4. Step 4: Simplify right side
   11,013.76x = 85,449,049.54
5. Step 5: Solve for x
   x = 85,449,049.54/11,013.76
6. Step 6: Final answer
   x = 7,758.39