Finding the Fourth Proportional to 3,555.15, 5,333.94 and 3,210.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,555.15 : 5,333.94 = 3,210.09 : x
2. Step 2: Convert to fraction form
   3,555.15/5,333.94 = 3,210.09/x
3. Step 3: Cross multiply
   3,555.15x = 5,333.94 × 3,210.09
4. Step 4: Simplify right side
   3,555.15x = 17,122,427.45
5. Step 5: Solve for x
   x = 17,122,427.45/3,555.15
6. Step 6: Final answer
   x = 4,816.23