Finding the Fourth Proportional to 18,714.15, 25,818.89 and 12,003.39

Step by Step Solution

1. Step 1: Write the proportion equation
   18,714.15 : 25,818.89 = 12,003.39 : x
2. Step 2: Convert to fraction form
   18,714.15/25,818.89 = 12,003.39/x
3. Step 3: Cross multiply
   18,714.15x = 25,818.89 × 12,003.39
4. Step 4: Simplify right side
   18,714.15x = 309,914,146.02
5. Step 5: Solve for x
   x = 309,914,146.02/18,714.15
6. Step 6: Final answer
   x = 16,560.42