Finding the Fourth Proportional to 5,090.34, 7,020.72 and 3,411.21

Step by Step Solution

1. Step 1: Write the proportion equation
   5,090.34 : 7,020.72 = 3,411.21 : x
2. Step 2: Convert to fraction form
   5,090.34/7,020.72 = 3,411.21/x
3. Step 3: Cross multiply
   5,090.34x = 7,020.72 × 3,411.21
4. Step 4: Simplify right side
   5,090.34x = 23,949,150.27
5. Step 5: Solve for x
   x = 23,949,150.27/5,090.34
6. Step 6: Final answer
   x = 4,704.82