Finding the Fourth Proportional to 30,583.08, 42,213.60 and 19,974.33

Step by Step Solution

1. Step 1: Write the proportion equation
   30,583.08 : 42,213.60 = 19,974.33 : x
2. Step 2: Convert to fraction form
   30,583.08/42,213.60 = 19,974.33/x
3. Step 3: Cross multiply
   30,583.08x = 42,213.60 × 19,974.33
4. Step 4: Simplify right side
   30,583.08x = 843,188,376.89
5. Step 5: Solve for x
   x = 843,188,376.89/30,583.08
6. Step 6: Final answer
   x = 27,570.42