Finding the Fourth Proportional to 6,339.20, 9,510.16 and 3,219.62

Step by Step Solution

1. Step 1: Write the proportion equation
   6,339.20 : 9,510.16 = 3,219.62 : x
2. Step 2: Convert to fraction form
   6,339.20/9,510.16 = 3,219.62/x
3. Step 3: Cross multiply
   6,339.20x = 9,510.16 × 3,219.62
4. Step 4: Simplify right side
   6,339.20x = 30,619,101.34
5. Step 5: Solve for x
   x = 30,619,101.34/6,339.20
6. Step 6: Final answer
   x = 4,830.12