Finding the Fourth Proportional to 10,496.15, 15,748.31 and 3,920.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,496.15 : 15,748.31 = 3,920.79 : x
2. Step 2: Convert to fraction form
   10,496.15/15,748.31 = 3,920.79/x
3. Step 3: Cross multiply
   10,496.15x = 15,748.31 × 3,920.79
4. Step 4: Simplify right side
   10,496.15x = 61,745,885.22
5. Step 5: Solve for x
   x = 61,745,885.22/10,496.15
6. Step 6: Final answer
   x = 5,882.72