Finding the Fourth Proportional to 19,890.83, 27,450.02 and 10,938.71

Step by Step Solution

1. Step 1: Write the proportion equation
   19,890.83 : 27,450.02 = 10,938.71 : x
2. Step 2: Convert to fraction form
   19,890.83/27,450.02 = 10,938.71/x
3. Step 3: Cross multiply
   19,890.83x = 27,450.02 × 10,938.71
4. Step 4: Simplify right side
   19,890.83x = 300,267,808.27
5. Step 5: Solve for x
   x = 300,267,808.27/19,890.83
6. Step 6: Final answer
   x = 15,095.79