Finding the Fourth Proportional to 11,013.52, 16,522.72 and 5,170.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,013.52 : 16,522.72 = 5,170.20 : x
2. Step 2: Convert to fraction form
   11,013.52/16,522.72 = 5,170.20/x
3. Step 3: Cross multiply
   11,013.52x = 16,522.72 × 5,170.20
4. Step 4: Simplify right side
   11,013.52x = 85,425,766.94
5. Step 5: Solve for x
   x = 85,425,766.94/11,013.52
6. Step 6: Final answer
   x = 7,756.45