Finding the Fourth Proportional to 19,883.85, 27,419.37 and 13,167.03

Step by Step Solution

1. Step 1: Write the proportion equation
   19,883.85 : 27,419.37 = 13,167.03 : x
2. Step 2: Convert to fraction form
   19,883.85/27,419.37 = 13,167.03/x
3. Step 3: Cross multiply
   19,883.85x = 27,419.37 × 13,167.03
4. Step 4: Simplify right side
   19,883.85x = 361,031,667.37
5. Step 5: Solve for x
   x = 361,031,667.37/19,883.85
6. Step 6: Final answer
   x = 18,157.03