Finding the Fourth Proportional to 3,627.33, 5,431.46 and 2,920.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,627.33 : 5,431.46 = 2,920.76 : x
2. Step 2: Convert to fraction form
   3,627.33/5,431.46 = 2,920.76/x
3. Step 3: Cross multiply
   3,627.33x = 5,431.46 × 2,920.76
4. Step 4: Simplify right side
   3,627.33x = 15,863,969.72
5. Step 5: Solve for x
   x = 15,863,969.72/3,627.33
6. Step 6: Final answer
   x = 4,373.45