Finding the Fourth Proportional to 19,859.34, 27,406.31 and 10,907.49

Step by Step Solution

1. Step 1: Write the proportion equation
   19,859.34 : 27,406.31 = 10,907.49 : x
2. Step 2: Convert to fraction form
   19,859.34/27,406.31 = 10,907.49/x
3. Step 3: Cross multiply
   19,859.34x = 27,406.31 × 10,907.49
4. Step 4: Simplify right side
   19,859.34x = 298,933,997.72
5. Step 5: Solve for x
   x = 298,933,997.72/19,859.34
6. Step 6: Final answer
   x = 15,052.56