Finding the Fourth Proportional to 3,757.32, 5,631.12 and 3,699

Step by Step Solution

1. Step 1: Write the proportion equation
   3,757.32 : 5,631.12 = 3,699 : x
2. Step 2: Convert to fraction form
   3,757.32/5,631.12 = 3,699/x
3. Step 3: Cross multiply
   3,757.32x = 5,631.12 × 3,699
4. Step 4: Simplify right side
   3,757.32x = 20,829,512.88
5. Step 5: Solve for x
   x = 20,829,512.88/3,757.32
6. Step 6: Final answer
   x = 5,543.72