Finding the Fourth Proportional to 12,108.40, 18,164.73 and 5,535.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,108.40 : 18,164.73 = 5,535.25 : x
2. Step 2: Convert to fraction form
   12,108.40/18,164.73 = 5,535.25/x
3. Step 3: Cross multiply
   12,108.40x = 18,164.73 × 5,535.25
4. Step 4: Simplify right side
   12,108.40x = 100,546,321.73
5. Step 5: Solve for x
   x = 100,546,321.73/12,108.40
6. Step 6: Final answer
   x = 8,303.85