Finding the Fourth Proportional to 3,516.12, 5,272.56 and 1,977.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,516.12 : 5,272.56 = 1,977.12 : x
2. Step 2: Convert to fraction form
   3,516.12/5,272.56 = 1,977.12/x
3. Step 3: Cross multiply
   3,516.12x = 5,272.56 × 1,977.12
4. Step 4: Simplify right side
   3,516.12x = 10,424,483.83
5. Step 5: Solve for x
   x = 10,424,483.83/3,516.12
6. Step 6: Final answer
   x = 2,964.77