Finding the Fourth Proportional to 5,429.48, 7,493.22 and 3,071.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,429.48 : 7,493.22 = 3,071.72 : x
2. Step 2: Convert to fraction form
   5,429.48/7,493.22 = 3,071.72/x
3. Step 3: Cross multiply
   5,429.48x = 7,493.22 × 3,071.72
4. Step 4: Simplify right side
   5,429.48x = 23,017,073.74
5. Step 5: Solve for x
   x = 23,017,073.74/5,429.48
6. Step 6: Final answer
   x = 4,239.28