Finding the Fourth Proportional to 3,869.32, 5,796.42 and 3,090.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,869.32 : 5,796.42 = 3,090.91 : x
2. Step 2: Convert to fraction form
   3,869.32/5,796.42 = 3,090.91/x
3. Step 3: Cross multiply
   3,869.32x = 5,796.42 × 3,090.91
4. Step 4: Simplify right side
   3,869.32x = 17,916,212.54
5. Step 5: Solve for x
   x = 17,916,212.54/3,869.32
6. Step 6: Final answer
   x = 4,630.33