Finding the Fourth Proportional to 13,327.98, 19,986.12 and 7,086.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,327.98 : 19,986.12 = 7,086.48 : x
2. Step 2: Convert to fraction form
   13,327.98/19,986.12 = 7,086.48/x
3. Step 3: Cross multiply
   13,327.98x = 19,986.12 × 7,086.48
4. Step 4: Simplify right side
   13,327.98x = 141,631,239.66
5. Step 5: Solve for x
   x = 141,631,239.66/13,327.98
6. Step 6: Final answer
   x = 10,626.61