Finding the Fourth Proportional to 19,443.57, 29,148.42 and 10,078.62

Step by Step Solution

1. Step 1: Write the proportion equation
   19,443.57 : 29,148.42 = 10,078.62 : x
2. Step 2: Convert to fraction form
   19,443.57/29,148.42 = 10,078.62/x
3. Step 3: Cross multiply
   19,443.57x = 29,148.42 × 10,078.62
4. Step 4: Simplify right side
   19,443.57x = 293,775,848.78
5. Step 5: Solve for x
   x = 293,775,848.78/19,443.57
6. Step 6: Final answer
   x = 15,109.15