Finding the Fourth Proportional to 10,427.54, 14,390.20 and 5,711.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,427.54 : 14,390.20 = 5,711.52 : x
2. Step 2: Convert to fraction form
   10,427.54/14,390.20 = 5,711.52/x
3. Step 3: Cross multiply
   10,427.54x = 14,390.20 × 5,711.52
4. Step 4: Simplify right side
   10,427.54x = 82,189,900.83
5. Step 5: Solve for x
   x = 82,189,900.83/10,427.54
6. Step 6: Final answer
   x = 7,882.00