Finding the Fourth Proportional to 19,933.72, 27,508.72 and 10,981.28

Step by Step Solution

1. Step 1: Write the proportion equation
   19,933.72 : 27,508.72 = 10,981.28 : x
2. Step 2: Convert to fraction form
   19,933.72/27,508.72 = 10,981.28/x
3. Step 3: Cross multiply
   19,933.72x = 27,508.72 × 10,981.28
4. Step 4: Simplify right side
   19,933.72x = 302,080,956.76
5. Step 5: Solve for x
   x = 302,080,956.76/19,933.72
6. Step 6: Final answer
   x = 15,154.27