Finding the Fourth Proportional to 12,238.85, 18,357.12 and 5,665.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,238.85 : 18,357.12 = 5,665.07 : x
2. Step 2: Convert to fraction form
   12,238.85/18,357.12 = 5,665.07/x
3. Step 3: Cross multiply
   12,238.85x = 18,357.12 × 5,665.07
4. Step 4: Simplify right side
   12,238.85x = 103,994,278.01
5. Step 5: Solve for x
   x = 103,994,278.01/12,238.85
6. Step 6: Final answer
   x = 8,497.07