Finding the Fourth Proportional to 33,488.56, 50,244.18 and 21,017.80

Step by Step Solution

1. Step 1: Write the proportion equation
   33,488.56 : 50,244.18 = 21,017.80 : x
2. Step 2: Convert to fraction form
   33,488.56/50,244.18 = 21,017.80/x
3. Step 3: Cross multiply
   33,488.56x = 50,244.18 × 21,017.80
4. Step 4: Simplify right side
   33,488.56x = 1,056,022,126.40
5. Step 5: Solve for x
   x = 1,056,022,126.40/33,488.56
6. Step 6: Final answer
   x = 31,533.82