Finding the Fourth Proportional to 10,290.69, 15,419.82 and 7,956.41

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290.69 : 15,419.82 = 7,956.41 : x
2. Step 2: Convert to fraction form
   10,290.69/15,419.82 = 7,956.41/x
3. Step 3: Cross multiply
   10,290.69x = 15,419.82 × 7,956.41
4. Step 4: Simplify right side
   10,290.69x = 122,686,410.05
5. Step 5: Solve for x
   x = 122,686,410.05/10,290.69
6. Step 6: Final answer
   x = 11,922.08