Finding the Fourth Proportional to 12,090.87, 18,131.74 and 5,067.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,090.87 : 18,131.74 = 5,067.34 : x
2. Step 2: Convert to fraction form
   12,090.87/18,131.74 = 5,067.34/x
3. Step 3: Cross multiply
   12,090.87x = 18,131.74 × 5,067.34
4. Step 4: Simplify right side
   12,090.87x = 91,879,691.37
5. Step 5: Solve for x
   x = 91,879,691.37/12,090.87
6. Step 6: Final answer
   x = 7,599.10