Finding the Fourth Proportional to 19,908.45, 27,472.91 and 10,955.45

Step by Step Solution

1. Step 1: Write the proportion equation
   19,908.45 : 27,472.91 = 10,955.45 : x
2. Step 2: Convert to fraction form
   19,908.45/27,472.91 = 10,955.45/x
3. Step 3: Cross multiply
   19,908.45x = 27,472.91 × 10,955.45
4. Step 4: Simplify right side
   19,908.45x = 300,978,105.76
5. Step 5: Solve for x
   x = 300,978,105.76/19,908.45
6. Step 6: Final answer
   x = 15,118.11