Finding the Fourth Proportional to 3,857.20, 5,787.62 and 3,667.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,857.20 : 5,787.62 = 3,667.04 : x
2. Step 2: Convert to fraction form
   3,857.20/5,787.62 = 3,667.04/x
3. Step 3: Cross multiply
   3,857.20x = 5,787.62 × 3,667.04
4. Step 4: Simplify right side
   3,857.20x = 21,223,434.04
5. Step 5: Solve for x
   x = 21,223,434.04/3,857.20
6. Step 6: Final answer
   x = 5,502.29