Finding the Fourth Proportional to 19,919.27, 29,897.42 and 10,065.49

Step by Step Solution

1. Step 1: Write the proportion equation
   19,919.27 : 29,897.42 = 10,065.49 : x
2. Step 2: Convert to fraction form
   19,919.27/29,897.42 = 10,065.49/x
3. Step 3: Cross multiply
   19,919.27x = 29,897.42 × 10,065.49
4. Step 4: Simplify right side
   19,919.27x = 300,932,056.96
5. Step 5: Solve for x
   x = 300,932,056.96/19,919.27
6. Step 6: Final answer
   x = 15,107.58