Finding the Fourth Proportional to 19,617.85, 27,078.56 and 13,333.87

Step by Step Solution

1. Step 1: Write the proportion equation
   19,617.85 : 27,078.56 = 13,333.87 : x
2. Step 2: Convert to fraction form
   19,617.85/27,078.56 = 13,333.87/x
3. Step 3: Cross multiply
   19,617.85x = 27,078.56 × 13,333.87
4. Step 4: Simplify right side
   19,617.85x = 361,061,914.46
5. Step 5: Solve for x
   x = 361,061,914.46/19,617.85
6. Step 6: Final answer
   x = 18,404.77