Finding the Fourth Proportional to 33,720.09, 46,507.41 and 21,621.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,720.09 : 46,507.41 = 21,621.72 : x
2. Step 2: Convert to fraction form
   33,720.09/46,507.41 = 21,621.72/x
3. Step 3: Cross multiply
   33,720.09x = 46,507.41 × 21,621.72
4. Step 4: Simplify right side
   33,720.09x = 1,005,570,196.95
5. Step 5: Solve for x
   x = 1,005,570,196.95/33,720.09
6. Step 6: Final answer
   x = 29,821.10