Finding the Fourth Proportional to 13,907.36, 19,196.18 and 7,942.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,907.36 : 19,196.18 = 7,942.28 : x
2. Step 2: Convert to fraction form
   13,907.36/19,196.18 = 7,942.28/x
3. Step 3: Cross multiply
   13,907.36x = 19,196.18 × 7,942.28
4. Step 4: Simplify right side
   13,907.36x = 152,461,436.49
5. Step 5: Solve for x
   x = 152,461,436.49/13,907.36
6. Step 6: Final answer
   x = 10,962.64