Finding the Fourth Proportional to 10,216.80, 14,098.39 and 5,739.67

Step by Step Solution

1. Step 1: Write the proportion equation
   10,216.80 : 14,098.39 = 5,739.67 : x
2. Step 2: Convert to fraction form
   10,216.80/14,098.39 = 5,739.67/x
3. Step 3: Cross multiply
   10,216.80x = 14,098.39 × 5,739.67
4. Step 4: Simplify right side
   10,216.80x = 80,920,153.45
5. Step 5: Solve for x
   x = 80,920,153.45/10,216.80
6. Step 6: Final answer
   x = 7,920.31