Finding the Fourth Proportional to 19,923.81, 27,493.88 and 10,972.10

Step by Step Solution

1. Step 1: Write the proportion equation
   19,923.81 : 27,493.88 = 10,972.10 : x
2. Step 2: Convert to fraction form
   19,923.81/27,493.88 = 10,972.10/x
3. Step 3: Cross multiply
   19,923.81x = 27,493.88 × 10,972.10
4. Step 4: Simplify right side
   19,923.81x = 301,665,408.42
5. Step 5: Solve for x
   x = 301,665,408.42/19,923.81
6. Step 6: Final answer
   x = 15,140.95