Finding the Fourth Proportional to 5,090.27, 7,025.36 and 3,100.55

Step by Step Solution

1. Step 1: Write the proportion equation
   5,090.27 : 7,025.36 = 3,100.55 : x
2. Step 2: Convert to fraction form
   5,090.27/7,025.36 = 3,100.55/x
3. Step 3: Cross multiply
   5,090.27x = 7,025.36 × 3,100.55
4. Step 4: Simplify right side
   5,090.27x = 21,782,429.32
5. Step 5: Solve for x
   x = 21,782,429.32/5,090.27
6. Step 6: Final answer
   x = 4,279.23