Finding the Fourth Proportional to 10,956.74, 15,120.27 and 5,920.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,956.74 : 15,120.27 = 5,920.92 : x
2. Step 2: Convert to fraction form
   10,956.74/15,120.27 = 5,920.92/x
3. Step 3: Cross multiply
   10,956.74x = 15,120.27 × 5,920.92
4. Step 4: Simplify right side
   10,956.74x = 89,525,909.05
5. Step 5: Solve for x
   x = 89,525,909.05/10,956.74
6. Step 6: Final answer
   x = 8,170.86