Finding the Fourth Proportional to 4,947.37, 7,419.23 and 4,172.83

Step by Step Solution

1. Step 1: Write the proportion equation
   4,947.37 : 7,419.23 = 4,172.83 : x
2. Step 2: Convert to fraction form
   4,947.37/7,419.23 = 4,172.83/x
3. Step 3: Cross multiply
   4,947.37x = 7,419.23 × 4,172.83
4. Step 4: Simplify right side
   4,947.37x = 30,959,127.56
5. Step 5: Solve for x
   x = 30,959,127.56/4,947.37
6. Step 6: Final answer
   x = 6,257.70