Finding the Fourth Proportional to 10,892.78, 16,339.13 and 7,194.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,892.78 : 16,339.13 = 7,194.12 : x
2. Step 2: Convert to fraction form
   10,892.78/16,339.13 = 7,194.12/x
3. Step 3: Cross multiply
   10,892.78x = 16,339.13 × 7,194.12
4. Step 4: Simplify right side
   10,892.78x = 117,545,661.92
5. Step 5: Solve for x
   x = 117,545,661.92/10,892.78
6. Step 6: Final answer
   x = 10,791.15