Finding the Fourth Proportional to 3,333.78, 5,002.49 and 2,505.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,333.78 : 5,002.49 = 2,505.45 : x
2. Step 2: Convert to fraction form
   3,333.78/5,002.49 = 2,505.45/x
3. Step 3: Cross multiply
   3,333.78x = 5,002.49 × 2,505.45
4. Step 4: Simplify right side
   3,333.78x = 12,533,513.59
5. Step 5: Solve for x
   x = 12,533,513.59/3,333.78
6. Step 6: Final answer
   x = 3,759.55