Finding the Fourth Proportional to 5,436.51, 8,140.81 and 3,768.26

Step by Step Solution

1. Step 1: Write the proportion equation
   5,436.51 : 8,140.81 = 3,768.26 : x
2. Step 2: Convert to fraction form
   5,436.51/8,140.81 = 3,768.26/x
3. Step 3: Cross multiply
   5,436.51x = 8,140.81 × 3,768.26
4. Step 4: Simplify right side
   5,436.51x = 30,676,629.15
5. Step 5: Solve for x
   x = 30,676,629.15/5,436.51
6. Step 6: Final answer
   x = 5,642.71