Finding the Fourth Proportional to 12,514.15, 18,780.47 and 10,078.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,514.15 : 18,780.47 = 10,078.37 : x
2. Step 2: Convert to fraction form
   12,514.15/18,780.47 = 10,078.37/x
3. Step 3: Cross multiply
   12,514.15x = 18,780.47 × 10,078.37
4. Step 4: Simplify right side
   12,514.15x = 189,276,381.14
5. Step 5: Solve for x
   x = 189,276,381.14/12,514.15
6. Step 6: Final answer
   x = 15,125.00