Finding the Fourth Proportional to 13,908.49, 19,190.84 and 7,942.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,908.49 : 19,190.84 = 7,942.10 : x
2. Step 2: Convert to fraction form
   13,908.49/19,190.84 = 7,942.10/x
3. Step 3: Cross multiply
   13,908.49x = 19,190.84 × 7,942.10
4. Step 4: Simplify right side
   13,908.49x = 152,415,570.36
5. Step 5: Solve for x
   x = 152,415,570.36/13,908.49
6. Step 6: Final answer
   x = 10,958.46