Finding the Fourth Proportional to 19,881.17, 27,436.71 and 10,929.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,881.17 : 27,436.71 = 10,929.50 : x
2. Step 2: Convert to fraction form
   19,881.17/27,436.71 = 10,929.50/x
3. Step 3: Cross multiply
   19,881.17x = 27,436.71 × 10,929.50
4. Step 4: Simplify right side
   19,881.17x = 299,869,384.76
5. Step 5: Solve for x
   x = 299,869,384.76/19,881.17
6. Step 6: Final answer
   x = 15,083.09