Finding the Fourth Proportional to 3,333.50, 5,005.39 and 2,820.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,333.50 : 5,005.39 = 2,820.25 : x
2. Step 2: Convert to fraction form
   3,333.50/5,005.39 = 2,820.25/x
3. Step 3: Cross multiply
   3,333.50x = 5,005.39 × 2,820.25
4. Step 4: Simplify right side
   3,333.50x = 14,116,445.68
5. Step 5: Solve for x
   x = 14,116,445.68/3,333.50
6. Step 6: Final answer
   x = 4,234.72