Finding the Fourth Proportional to 13,860.71, 19,127.78 and 7,892.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,860.71 : 19,127.78 = 7,892.37 : x
2. Step 2: Convert to fraction form
   13,860.71/19,127.78 = 7,892.37/x
3. Step 3: Cross multiply
   13,860.71x = 19,127.78 × 7,892.37
4. Step 4: Simplify right side
   13,860.71x = 150,963,517.04
5. Step 5: Solve for x
   x = 150,963,517.04/13,860.71
6. Step 6: Final answer
   x = 10,891.47