Finding the Fourth Proportional to 3,961.98, 5,945.27 and 3,657.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,961.98 : 5,945.27 = 3,657.51 : x
2. Step 2: Convert to fraction form
   3,961.98/5,945.27 = 3,657.51/x
3. Step 3: Cross multiply
   3,961.98x = 5,945.27 × 3,657.51
4. Step 4: Simplify right side
   3,961.98x = 21,744,866.19
5. Step 5: Solve for x
   x = 21,744,866.19/3,961.98
6. Step 6: Final answer
   x = 5,488.38