Finding the Fourth Proportional to 19,399.98, 29,112.74 and 10,641.05

Step by Step Solution

1. Step 1: Write the proportion equation
   19,399.98 : 29,112.74 = 10,641.05 : x
2. Step 2: Convert to fraction form
   19,399.98/29,112.74 = 10,641.05/x
3. Step 3: Cross multiply
   19,399.98x = 29,112.74 × 10,641.05
4. Step 4: Simplify right side
   19,399.98x = 309,790,121.98
5. Step 5: Solve for x
   x = 309,790,121.98/19,399.98
6. Step 6: Final answer
   x = 15,968.58