Finding the Fourth Proportional to 13,986.56, 19,259.82 and 13,676.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,986.56 : 19,259.82 = 13,676.12 : x
2. Step 2: Convert to fraction form
   13,986.56/19,259.82 = 13,676.12/x
3. Step 3: Cross multiply
   13,986.56x = 19,259.82 × 13,676.12
4. Step 4: Simplify right side
   13,986.56x = 263,399,609.50
5. Step 5: Solve for x
   x = 263,399,609.50/13,986.56
6. Step 6: Final answer
   x = 18,832.34