Finding the Fourth Proportional to 21,817.58, 30,107.41 and 13,333.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,817.58 : 30,107.41 = 13,333.91 : x
2. Step 2: Convert to fraction form
   21,817.58/30,107.41 = 13,333.91/x
3. Step 3: Cross multiply
   21,817.58x = 30,107.41 × 13,333.91
4. Step 4: Simplify right side
   21,817.58x = 401,449,428.60
5. Step 5: Solve for x
   x = 401,449,428.60/21,817.58
6. Step 6: Final answer
   x = 18,400.27