Finding the Fourth Proportional to 19,553.89, 26,974.46 and 12,371.76

Step by Step Solution

1. Step 1: Write the proportion equation
   19,553.89 : 26,974.46 = 12,371.76 : x
2. Step 2: Convert to fraction form
   19,553.89/26,974.46 = 12,371.76/x
3. Step 3: Cross multiply
   19,553.89x = 26,974.46 × 12,371.76
4. Step 4: Simplify right side
   19,553.89x = 333,721,545.25
5. Step 5: Solve for x
   x = 333,721,545.25/19,553.89
6. Step 6: Final answer
   x = 17,066.76