Finding the Fourth Proportional to 4,807.72, 7,193.72 and 4,219.96

Step by Step Solution

1. Step 1: Write the proportion equation
   4,807.72 : 7,193.72 = 4,219.96 : x
2. Step 2: Convert to fraction form
   4,807.72/7,193.72 = 4,219.96/x
3. Step 3: Cross multiply
   4,807.72x = 7,193.72 × 4,219.96
4. Step 4: Simplify right side
   4,807.72x = 30,357,210.65
5. Step 5: Solve for x
   x = 30,357,210.65/4,807.72
6. Step 6: Final answer
   x = 6,314.26