Finding the Fourth Proportional to 21,942.76, 30,297.63 and 21,899.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,942.76 : 30,297.63 = 21,899.02 : x
2. Step 2: Convert to fraction form
   21,942.76/30,297.63 = 21,899.02/x
3. Step 3: Cross multiply
   21,942.76x = 30,297.63 × 21,899.02
4. Step 4: Simplify right side
   21,942.76x = 663,488,405.32
5. Step 5: Solve for x
   x = 663,488,405.32/21,942.76
6. Step 6: Final answer
   x = 30,237.24