Finding the Fourth Proportional to 19,786.05, 29,621.43 and 10,403.82

Step by Step Solution

1. Step 1: Write the proportion equation
   19,786.05 : 29,621.43 = 10,403.82 : x
2. Step 2: Convert to fraction form
   19,786.05/29,621.43 = 10,403.82/x
3. Step 3: Cross multiply
   19,786.05x = 29,621.43 × 10,403.82
4. Step 4: Simplify right side
   19,786.05x = 308,176,025.86
5. Step 5: Solve for x
   x = 308,176,025.86/19,786.05
6. Step 6: Final answer
   x = 15,575.42