Finding the Fourth Proportional to 19,714.89, 27,206.61 and 12,641.34

Step by Step Solution

1. Step 1: Write the proportion equation
   19,714.89 : 27,206.61 = 12,641.34 : x
2. Step 2: Convert to fraction form
   19,714.89/27,206.61 = 12,641.34/x
3. Step 3: Cross multiply
   19,714.89x = 27,206.61 × 12,641.34
4. Step 4: Simplify right side
   19,714.89x = 343,928,007.26
5. Step 5: Solve for x
   x = 343,928,007.26/19,714.89
6. Step 6: Final answer
   x = 17,445.09