Finding the Fourth Proportional to 3,866.79, 5,802.54 and 3,553.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,866.79 : 5,802.54 = 3,553.12 : x
2. Step 2: Convert to fraction form
   3,866.79/5,802.54 = 3,553.12/x
3. Step 3: Cross multiply
   3,866.79x = 5,802.54 × 3,553.12
4. Step 4: Simplify right side
   3,866.79x = 20,617,082.21
5. Step 5: Solve for x
   x = 20,617,082.21/3,866.79
6. Step 6: Final answer
   x = 5,331.84