Finding the Fourth Proportional to 4,821.50, 7,234.96 and 4,784.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,821.50 : 7,234.96 = 4,784.78 : x
2. Step 2: Convert to fraction form
   4,821.50/7,234.96 = 4,784.78/x
3. Step 3: Cross multiply
   4,821.50x = 7,234.96 × 4,784.78
4. Step 4: Simplify right side
   4,821.50x = 34,617,691.91
5. Step 5: Solve for x
   x = 34,617,691.91/4,821.50
6. Step 6: Final answer
   x = 7,179.86