Finding the Fourth Proportional to 19,881.27, 27,436.50 and 10,929.15

Step by Step Solution

1. Step 1: Write the proportion equation
   19,881.27 : 27,436.50 = 10,929.15 : x
2. Step 2: Convert to fraction form
   19,881.27/27,436.50 = 10,929.15/x
3. Step 3: Cross multiply
   19,881.27x = 27,436.50 × 10,929.15
4. Step 4: Simplify right side
   19,881.27x = 299,857,726.86
5. Step 5: Solve for x
   x = 299,857,726.86/19,881.27
6. Step 6: Final answer
   x = 15,082.42