Finding the Fourth Proportional to 16,923.89, 25,390.17 and 5,077.64

Step by Step Solution

1. Step 1: Write the proportion equation
   16,923.89 : 25,390.17 = 5,077.64 : x
2. Step 2: Convert to fraction form
   16,923.89/25,390.17 = 5,077.64/x
3. Step 3: Cross multiply
   16,923.89x = 25,390.17 × 5,077.64
4. Step 4: Simplify right side
   16,923.89x = 128,922,142.80
5. Step 5: Solve for x
   x = 128,922,142.80/16,923.89
6. Step 6: Final answer
   x = 7,617.76