Finding the Fourth Proportional to 3,516.24, 4,851.56 and 2,118.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,516.24 : 4,851.56 = 2,118.72 : x
2. Step 2: Convert to fraction form
   3,516.24/4,851.56 = 2,118.72/x
3. Step 3: Cross multiply
   3,516.24x = 4,851.56 × 2,118.72
4. Step 4: Simplify right side
   3,516.24x = 10,279,097.20
5. Step 5: Solve for x
   x = 10,279,097.20/3,516.24
6. Step 6: Final answer
   x = 2,923.32