Finding the Fourth Proportional to 4,728.61, 7,103.24 and 4,064.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,728.61 : 7,103.24 = 4,064.31 : x
2. Step 2: Convert to fraction form
   4,728.61/7,103.24 = 4,064.31/x
3. Step 3: Cross multiply
   4,728.61x = 7,103.24 × 4,064.31
4. Step 4: Simplify right side
   4,728.61x = 28,869,787.15
5. Step 5: Solve for x
   x = 28,869,787.15/4,728.61
6. Step 6: Final answer
   x = 6,105.34