Finding the Fourth Proportional to 17,159.29, 25,705.59 and 12,648.14

Step by Step Solution

1. Step 1: Write the proportion equation
   17,159.29 : 25,705.59 = 12,648.14 : x
2. Step 2: Convert to fraction form
   17,159.29/25,705.59 = 12,648.14/x
3. Step 3: Cross multiply
   17,159.29x = 25,705.59 × 12,648.14
4. Step 4: Simplify right side
   17,159.29x = 325,127,965.37
5. Step 5: Solve for x
   x = 325,127,965.37/17,159.29
6. Step 6: Final answer
   x = 18,947.64