Finding the Fourth Proportional to 30,552.99, 42,164.81 and 17,128.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30,552.99 : 42,164.81 = 17,128.56 : x
2. Step 2: Convert to fraction form
   30,552.99/42,164.81 = 17,128.56/x
3. Step 3: Cross multiply
   30,552.99x = 42,164.81 × 17,128.56
4. Step 4: Simplify right side
   30,552.99x = 722,222,392.33
5. Step 5: Solve for x
   x = 722,222,392.33/30,552.99
6. Step 6: Final answer
   x = 23,638.35