Finding the Fourth Proportional to 5,370.12, 7,410.72 and 3,012.21

Step by Step Solution

1. Step 1: Write the proportion equation
   5,370.12 : 7,410.72 = 3,012.21 : x
2. Step 2: Convert to fraction form
   5,370.12/7,410.72 = 3,012.21/x
3. Step 3: Cross multiply
   5,370.12x = 7,410.72 × 3,012.21
4. Step 4: Simplify right side
   5,370.12x = 22,322,644.89
5. Step 5: Solve for x
   x = 22,322,644.89/5,370.12
6. Step 6: Final answer
   x = 4,156.82