Finding the Fourth Proportional to 3,805.05, 5,240.29 and 3,630.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,805.05 : 5,240.29 = 3,630.09 : x
2. Step 2: Convert to fraction form
   3,805.05/5,240.29 = 3,630.09/x
3. Step 3: Cross multiply
   3,805.05x = 5,240.29 × 3,630.09
4. Step 4: Simplify right side
   3,805.05x = 19,022,724.33
5. Step 5: Solve for x
   x = 19,022,724.33/3,805.05
6. Step 6: Final answer
   x = 4,999.34