Finding the Fourth Proportional to 10,644.17, 15,965.27 and 5,020.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,644.17 : 15,965.27 = 5,020.55 : x
2. Step 2: Convert to fraction form
   10,644.17/15,965.27 = 5,020.55/x
3. Step 3: Cross multiply
   10,644.17x = 15,965.27 × 5,020.55
4. Step 4: Simplify right side
   10,644.17x = 80,154,436.30
5. Step 5: Solve for x
   x = 80,154,436.30/10,644.17
6. Step 6: Final answer
   x = 7,530.36