Finding the Fourth Proportional to 10,939.42, 16,413.72 and 4,700.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,939.42 : 16,413.72 = 4,700.80 : x
2. Step 2: Convert to fraction form
   10,939.42/16,413.72 = 4,700.80/x
3. Step 3: Cross multiply
   10,939.42x = 16,413.72 × 4,700.80
4. Step 4: Simplify right side
   10,939.42x = 77,157,614.98
5. Step 5: Solve for x
   x = 77,157,614.98/10,939.42
6. Step 6: Final answer
   x = 7,053.17