Finding the Fourth Proportional to 4,939.30, 7,345.39 and 4,783.54

Step by Step Solution

1. Step 1: Write the proportion equation
   4,939.30 : 7,345.39 = 4,783.54 : x
2. Step 2: Convert to fraction form
   4,939.30/7,345.39 = 4,783.54/x
3. Step 3: Cross multiply
   4,939.30x = 7,345.39 × 4,783.54
4. Step 4: Simplify right side
   4,939.30x = 35,136,966.88
5. Step 5: Solve for x
   x = 35,136,966.88/4,939.30
6. Step 6: Final answer
   x = 7,113.75