Finding the Fourth Proportional to 13,987.37, 19,297.69 and 7,936.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,987.37 : 19,297.69 = 7,936.89 : x
2. Step 2: Convert to fraction form
   13,987.37/19,297.69 = 7,936.89/x
3. Step 3: Cross multiply
   13,987.37x = 19,297.69 × 7,936.89
4. Step 4: Simplify right side
   13,987.37x = 153,163,622.94
5. Step 5: Solve for x
   x = 153,163,622.94/13,987.37
6. Step 6: Final answer
   x = 10,950.14