Finding the Fourth Proportional to 3,927.72, 5,419.71 and 3,133.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,927.72 : 5,419.71 = 3,133.02 : x
2. Step 2: Convert to fraction form
   3,927.72/5,419.71 = 3,133.02/x
3. Step 3: Cross multiply
   3,927.72x = 5,419.71 × 3,133.02
4. Step 4: Simplify right side
   3,927.72x = 16,980,059.82
5. Step 5: Solve for x
   x = 16,980,059.82/3,927.72
6. Step 6: Final answer
   x = 4,323.13