Finding the Fourth Proportional to 19,654.46, 27,091.55 and 13,279.05

Step by Step Solution

1. Step 1: Write the proportion equation
   19,654.46 : 27,091.55 = 13,279.05 : x
2. Step 2: Convert to fraction form
   19,654.46/27,091.55 = 13,279.05/x
3. Step 3: Cross multiply
   19,654.46x = 27,091.55 × 13,279.05
4. Step 4: Simplify right side
   19,654.46x = 359,750,047.03
5. Step 5: Solve for x
   x = 359,750,047.03/19,654.46
6. Step 6: Final answer
   x = 18,303.74