Finding the Fourth Proportional to 13,918.34, 19,205.42 and 7,949.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,918.34 : 19,205.42 = 7,949.58 : x
2. Step 2: Convert to fraction form
   13,918.34/19,205.42 = 7,949.58/x
3. Step 3: Cross multiply
   13,918.34x = 19,205.42 × 7,949.58
4. Step 4: Simplify right side
   13,918.34x = 152,675,022.72
5. Step 5: Solve for x
   x = 152,675,022.72/13,918.34
6. Step 6: Final answer
   x = 10,969.34