Finding the Fourth Proportional to 5,181.56, 7,149.52 and 2,942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,181.56 : 7,149.52 = 2,942.72 : x
2. Step 2: Convert to fraction form
   5,181.56/7,149.52 = 2,942.72/x
3. Step 3: Cross multiply
   5,181.56x = 7,149.52 × 2,942.72
4. Step 4: Simplify right side
   5,181.56x = 21,039,035.49
5. Step 5: Solve for x
   x = 21,039,035.49/5,181.56
6. Step 6: Final answer
   x = 4,060.37