Finding the Fourth Proportional to 10,439.27, 14,406.28 and 5,902.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,439.27 : 14,406.28 = 5,902.18 : x
2. Step 2: Convert to fraction form
   10,439.27/14,406.28 = 5,902.18/x
3. Step 3: Cross multiply
   10,439.27x = 14,406.28 × 5,902.18
4. Step 4: Simplify right side
   10,439.27x = 85,028,406.92
5. Step 5: Solve for x
   x = 85,028,406.92/10,439.27
6. Step 6: Final answer
   x = 8,145.05