Finding the Fourth Proportional to 3,820.96, 5,273.12 and 2,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,820.96 : 5,273.12 = 2,142.72 : x
2. Step 2: Convert to fraction form
   3,820.96/5,273.12 = 2,142.72/x
3. Step 3: Cross multiply
   3,820.96x = 5,273.12 × 2,142.72
4. Step 4: Simplify right side
   3,820.96x = 11,298,819.69
5. Step 5: Solve for x
   x = 11,298,819.69/3,820.96
6. Step 6: Final answer
   x = 2,957.06