Finding the Fourth Proportional to 3,520.17, 4,857.91 and 2,105.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,520.17 : 4,857.91 = 2,105.32 : x
2. Step 2: Convert to fraction form
   3,520.17/4,857.91 = 2,105.32/x
3. Step 3: Cross multiply
   3,520.17x = 4,857.91 × 2,105.32
4. Step 4: Simplify right side
   3,520.17x = 10,227,420.27
5. Step 5: Solve for x
   x = 10,227,420.27/3,520.17
6. Step 6: Final answer
   x = 2,905.38