Finding the Fourth Proportional to 12,131.32, 18,180.08 and 6,789.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,131.32 : 18,180.08 = 6,789.64 : x
2. Step 2: Convert to fraction form
   12,131.32/18,180.08 = 6,789.64/x
3. Step 3: Cross multiply
   12,131.32x = 18,180.08 × 6,789.64
4. Step 4: Simplify right side
   12,131.32x = 123,436,198.37
5. Step 5: Solve for x
   x = 123,436,198.37/12,131.32
6. Step 6: Final answer
   x = 10,175.00