Finding the Fourth Proportional to 12,809.82, 19,087.38 and 11,412.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,809.82 : 19,087.38 = 11,412.42 : x
2. Step 2: Convert to fraction form
   12,809.82/19,087.38 = 11,412.42/x
3. Step 3: Cross multiply
   12,809.82x = 19,087.38 × 11,412.42
4. Step 4: Simplify right side
   12,809.82x = 217,833,227.51
5. Step 5: Solve for x
   x = 217,833,227.51/12,809.82
6. Step 6: Final answer
   x = 17,005.17