Finding the Fourth Proportional to 12,847.47, 19,273.42 and 4,413.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,847.47 : 19,273.42 = 4,413.57 : x
2. Step 2: Convert to fraction form
   12,847.47/19,273.42 = 4,413.57/x
3. Step 3: Cross multiply
   12,847.47x = 19,273.42 × 4,413.57
4. Step 4: Simplify right side
   12,847.47x = 85,064,588.31
5. Step 5: Solve for x
   x = 85,064,588.31/12,847.47
6. Step 6: Final answer
   x = 6,621.12