Finding the Fourth Proportional to 3,817.56, 5,680.61 and 3,804.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,817.56 : 5,680.61 = 3,804.60 : x
2. Step 2: Convert to fraction form
   3,817.56/5,680.61 = 3,804.60/x
3. Step 3: Cross multiply
   3,817.56x = 5,680.61 × 3,804.60
4. Step 4: Simplify right side
   3,817.56x = 21,612,448.81
5. Step 5: Solve for x
   x = 21,612,448.81/3,817.56
6. Step 6: Final answer
   x = 5,661.33