Finding the Fourth Proportional to 8,711.46, 12,023.74 and 5,357.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,711.46 : 12,023.74 = 5,357.12 : x
2. Step 2: Convert to fraction form
   8,711.46/12,023.74 = 5,357.12/x
3. Step 3: Cross multiply
   8,711.46x = 12,023.74 × 5,357.12
4. Step 4: Simplify right side
   8,711.46x = 64,412,618.03
5. Step 5: Solve for x
   x = 64,412,618.03/8,711.46
6. Step 6: Final answer
   x = 7,394.01