Finding the Fourth Proportional to 33,811.18, 46,643.72 and 21,878.37

Step by Step Solution

1. Step 1: Write the proportion equation
   33,811.18 : 46,643.72 = 21,878.37 : x
2. Step 2: Convert to fraction form
   33,811.18/46,643.72 = 21,878.37/x
3. Step 3: Cross multiply
   33,811.18x = 46,643.72 × 21,878.37
4. Step 4: Simplify right side
   33,811.18x = 1,020,488,454.94
5. Step 5: Solve for x
   x = 1,020,488,454.94/33,811.18
6. Step 6: Final answer
   x = 30,181.99