Finding the Fourth Proportional to 18,892.07, 28,339.69 and 5,744.55

Step by Step Solution

1. Step 1: Write the proportion equation
   18,892.07 : 28,339.69 = 5,744.55 : x
2. Step 2: Convert to fraction form
   18,892.07/28,339.69 = 5,744.55/x
3. Step 3: Cross multiply
   18,892.07x = 28,339.69 × 5,744.55
4. Step 4: Simplify right side
   18,892.07x = 162,798,868.87
5. Step 5: Solve for x
   x = 162,798,868.87/18,892.07
6. Step 6: Final answer
   x = 8,617.31