Finding the Fourth Proportional to 6,090.06, 9,128.42 and 3,979.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,090.06 : 9,128.42 = 3,979.10 : x
2. Step 2: Convert to fraction form
   6,090.06/9,128.42 = 3,979.10/x
3. Step 3: Cross multiply
   6,090.06x = 9,128.42 × 3,979.10
4. Step 4: Simplify right side
   6,090.06x = 36,322,830.48
5. Step 5: Solve for x
   x = 36,322,830.48/6,090.06
6. Step 6: Final answer
   x = 5,964.28