Finding the Fourth Proportional to 10,290.42, 15,443.19 and 7,956.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290.42 : 15,443.19 = 7,956.18 : x
2. Step 2: Convert to fraction form
   10,290.42/15,443.19 = 7,956.18/x
3. Step 3: Cross multiply
   10,290.42x = 15,443.19 × 7,956.18
4. Step 4: Simplify right side
   10,290.42x = 122,868,799.41
5. Step 5: Solve for x
   x = 122,868,799.41/10,290.42
6. Step 6: Final answer
   x = 11,940.12