Finding the Fourth Proportional to 12,805.63, 19,174.78 and 10,293.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,805.63 : 19,174.78 = 10,293.48 : x
2. Step 2: Convert to fraction form
   12,805.63/19,174.78 = 10,293.48/x
3. Step 3: Cross multiply
   12,805.63x = 19,174.78 × 10,293.48
4. Step 4: Simplify right side
   12,805.63x = 197,375,256.25
5. Step 5: Solve for x
   x = 197,375,256.25/12,805.63
6. Step 6: Final answer
   x = 15,413.17