Finding the Fourth Proportional to 13,807.50, 19,055.37 and 7,839.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,807.50 : 19,055.37 = 7,839.42 : x
2. Step 2: Convert to fraction form
   13,807.50/19,055.37 = 7,839.42/x
3. Step 3: Cross multiply
   13,807.50x = 19,055.37 × 7,839.42
4. Step 4: Simplify right side
   13,807.50x = 149,383,048.69
5. Step 5: Solve for x
   x = 149,383,048.69/13,807.50
6. Step 6: Final answer
   x = 10,818.98