Finding the Fourth Proportional to 10,495.68, 15,744.24 and 3,921.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,495.68 : 15,744.24 = 3,921.72 : x
2. Step 2: Convert to fraction form
   10,495.68/15,744.24 = 3,921.72/x
3. Step 3: Cross multiply
   10,495.68x = 15,744.24 × 3,921.72
4. Step 4: Simplify right side
   10,495.68x = 61,744,500.89
5. Step 5: Solve for x
   x = 61,744,500.89/10,495.68
6. Step 6: Final answer
   x = 5,882.85