Finding the Fourth Proportional to 19,859.31, 27,406.04 and 10,907

Step by Step Solution

1. Step 1: Write the proportion equation
   19,859.31 : 27,406.04 = 10,907 : x
2. Step 2: Convert to fraction form
   19,859.31/27,406.04 = 10,907/x
3. Step 3: Cross multiply
   19,859.31x = 27,406.04 × 10,907
4. Step 4: Simplify right side
   19,859.31x = 298,917,678.28
5. Step 5: Solve for x
   x = 298,917,678.28/19,859.31
6. Step 6: Final answer
   x = 15,051.77