Finding the Fourth Proportional to 12,890.88, 17,789.13 and 7,514.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,890.88 : 17,789.13 = 7,514.46 : x
2. Step 2: Convert to fraction form
   12,890.88/17,789.13 = 7,514.46/x
3. Step 3: Cross multiply
   12,890.88x = 17,789.13 × 7,514.46
4. Step 4: Simplify right side
   12,890.88x = 133,675,705.82
5. Step 5: Solve for x
   x = 133,675,705.82/12,890.88
6. Step 6: Final answer
   x = 10,369.79