Finding the Fourth Proportional to 19,659.89, 29,347.29 and 18,196.48

Step by Step Solution

1. Step 1: Write the proportion equation
   19,659.89 : 29,347.29 = 18,196.48 : x
2. Step 2: Convert to fraction form
   19,659.89/29,347.29 = 18,196.48/x
3. Step 3: Cross multiply
   19,659.89x = 29,347.29 × 18,196.48
4. Step 4: Simplify right side
   19,659.89x = 534,017,375.54
5. Step 5: Solve for x
   x = 534,017,375.54/19,659.89
6. Step 6: Final answer
   x = 27,162.79