Finding the Fourth Proportional to 33,821.63, 46,665.46 and 21,870.59

Step by Step Solution

1. Step 1: Write the proportion equation
   33,821.63 : 46,665.46 = 21,870.59 : x
2. Step 2: Convert to fraction form
   33,821.63/46,665.46 = 21,870.59/x
3. Step 3: Cross multiply
   33,821.63x = 46,665.46 × 21,870.59
4. Step 4: Simplify right side
   33,821.63x = 1,020,601,142.82
5. Step 5: Solve for x
   x = 1,020,601,142.82/33,821.63
6. Step 6: Final answer
   x = 30,175.99