Finding the Fourth Proportional to 20,719.96, 31,074.72 and 5,928.96

Step by Step Solution

1. Step 1: Write the proportion equation
   20,719.96 : 31,074.72 = 5,928.96 : x
2. Step 2: Convert to fraction form
   20,719.96/31,074.72 = 5,928.96/x
3. Step 3: Cross multiply
   20,719.96x = 31,074.72 × 5,928.96
4. Step 4: Simplify right side
   20,719.96x = 184,240,771.89
5. Step 5: Solve for x
   x = 184,240,771.89/20,719.96
6. Step 6: Final answer
   x = 8,891.95