Finding the Fourth Proportional to 30,561.16, 42,177 and 17,644.60

Step by Step Solution

1. Step 1: Write the proportion equation
   30,561.16 : 42,177 = 17,644.60 : x
2. Step 2: Convert to fraction form
   30,561.16/42,177 = 17,644.60/x
3. Step 3: Cross multiply
   30,561.16x = 42,177 × 17,644.60
4. Step 4: Simplify right side
   30,561.16x = 744,196,294.20
5. Step 5: Solve for x
   x = 744,196,294.20/30,561.16
6. Step 6: Final answer
   x = 24,351.05