Finding the Fourth Proportional to 19,907.55, 27,471.42 and 10,954.83

Step by Step Solution

1. Step 1: Write the proportion equation
   19,907.55 : 27,471.42 = 10,954.83 : x
2. Step 2: Convert to fraction form
   19,907.55/27,471.42 = 10,954.83/x
3. Step 3: Cross multiply
   19,907.55x = 27,471.42 × 10,954.83
4. Step 4: Simplify right side
   19,907.55x = 300,944,735.96
5. Step 5: Solve for x
   x = 300,944,735.96/19,907.55
6. Step 6: Final answer
   x = 15,117.12