Finding the Fourth Proportional to 12,036.88, 18,057.72 and 4,251.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,036.88 : 18,057.72 = 4,251.16 : x
2. Step 2: Convert to fraction form
   12,036.88/18,057.72 = 4,251.16/x
3. Step 3: Cross multiply
   12,036.88x = 18,057.72 × 4,251.16
4. Step 4: Simplify right side
   12,036.88x = 76,766,256.96
5. Step 5: Solve for x
   x = 76,766,256.96/12,036.88
6. Step 6: Final answer
   x = 6,377.59