Finding the Fourth Proportional to 10,522.72, 15,780.24 and 3,501.44

Step by Step Solution

1. Step 1: Write the proportion equation
   10,522.72 : 15,780.24 = 3,501.44 : x
2. Step 2: Convert to fraction form
   10,522.72/15,780.24 = 3,501.44/x
3. Step 3: Cross multiply
   10,522.72x = 15,780.24 × 3,501.44
4. Step 4: Simplify right side
   10,522.72x = 55,253,563.55
5. Step 5: Solve for x
   x = 55,253,563.55/10,522.72
6. Step 6: Final answer
   x = 5,250.88