Finding the Fourth Proportional to 5,429.72, 7,493.18 and 3,071.81

Step by Step Solution

1. Step 1: Write the proportion equation
   5,429.72 : 7,493.18 = 3,071.81 : x
2. Step 2: Convert to fraction form
   5,429.72/7,493.18 = 3,071.81/x
3. Step 3: Cross multiply
   5,429.72x = 7,493.18 × 3,071.81
4. Step 4: Simplify right side
   5,429.72x = 23,017,628.63
5. Step 5: Solve for x
   x = 23,017,628.63/5,429.72
6. Step 6: Final answer
   x = 4,239.19