Finding the Fourth Proportional to 19,649, 27,118.37 and 12,590.46

Step by Step Solution

1. Step 1: Write the proportion equation
   19,649 : 27,118.37 = 12,590.46 : x
2. Step 2: Convert to fraction form
   19,649/27,118.37 = 12,590.46/x
3. Step 3: Cross multiply
   19,649x = 27,118.37 × 12,590.46
4. Step 4: Simplify right side
   19,649x = 341,432,689.80
5. Step 5: Solve for x
   x = 341,432,689.80/19,649
6. Step 6: Final answer
   x = 17,376.59