Finding the Fourth Proportional to 3,991.68, 5,512.32 and 3,773.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,991.68 : 5,512.32 = 3,773.52 : x
2. Step 2: Convert to fraction form
   3,991.68/5,512.32 = 3,773.52/x
3. Step 3: Cross multiply
   3,991.68x = 5,512.32 × 3,773.52
4. Step 4: Simplify right side
   3,991.68x = 20,800,849.77
5. Step 5: Solve for x
   x = 20,800,849.77/3,991.68
6. Step 6: Final answer
   x = 5,211.05