Finding the Fourth Proportional to 33,991, 46,900.47 and 20,559.63

Step by Step Solution

1. Step 1: Write the proportion equation
   33,991 : 46,900.47 = 20,559.63 : x
2. Step 2: Convert to fraction form
   33,991/46,900.47 = 20,559.63/x
3. Step 3: Cross multiply
   33,991x = 46,900.47 × 20,559.63
4. Step 4: Simplify right side
   33,991x = 964,256,310.03
5. Step 5: Solve for x
   x = 964,256,310.03/33,991
6. Step 6: Final answer
   x = 28,367.99