Finding the Fourth Proportional to 3,781.32, 5,705.81 and 3,629.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,781.32 : 5,705.81 = 3,629.61 : x
2. Step 2: Convert to fraction form
   3,781.32/5,705.81 = 3,629.61/x
3. Step 3: Cross multiply
   3,781.32x = 5,705.81 × 3,629.61
4. Step 4: Simplify right side
   3,781.32x = 20,709,860.50
5. Step 5: Solve for x
   x = 20,709,860.50/3,781.32
6. Step 6: Final answer
   x = 5,476.89