Finding the Fourth Proportional to 16,727.78, 25,091.71 and 5,642.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,727.78 : 25,091.71 = 5,642.25 : x
2. Step 2: Convert to fraction form
   16,727.78/25,091.71 = 5,642.25/x
3. Step 3: Cross multiply
   16,727.78x = 25,091.71 × 5,642.25
4. Step 4: Simplify right side
   16,727.78x = 141,573,686.64
5. Step 5: Solve for x
   x = 141,573,686.64/16,727.78
6. Step 6: Final answer
   x = 8,463.39