Finding the Fourth Proportional to 3,753.10, 5,636.31 and 3,561.67

Step by Step Solution

1. Step 1: Write the proportion equation
   3,753.10 : 5,636.31 = 3,561.67 : x
2. Step 2: Convert to fraction form
   3,753.10/5,636.31 = 3,561.67/x
3. Step 3: Cross multiply
   3,753.10x = 5,636.31 × 3,561.67
4. Step 4: Simplify right side
   3,753.10x = 20,074,676.24
5. Step 5: Solve for x
   x = 20,074,676.24/3,753.10
6. Step 6: Final answer
   x = 5,348.83