Finding the Fourth Proportional to 20,016.32, 27,618.72 and 12,560.96

Step by Step Solution

1. Step 1: Write the proportion equation
   20,016.32 : 27,618.72 = 12,560.96 : x
2. Step 2: Convert to fraction form
   20,016.32/27,618.72 = 12,560.96/x
3. Step 3: Cross multiply
   20,016.32x = 27,618.72 × 12,560.96
4. Step 4: Simplify right side
   20,016.32x = 346,917,637.17
5. Step 5: Solve for x
   x = 346,917,637.17/20,016.32
6. Step 6: Final answer
   x = 17,331.74