Finding the Fourth Proportional to 21,434.22, 32,145.98 and 8,954.33

Step by Step Solution

1. Step 1: Write the proportion equation
   21,434.22 : 32,145.98 = 8,954.33 : x
2. Step 2: Convert to fraction form
   21,434.22/32,145.98 = 8,954.33/x
3. Step 3: Cross multiply
   21,434.22x = 32,145.98 × 8,954.33
4. Step 4: Simplify right side
   21,434.22x = 287,845,507.59
5. Step 5: Solve for x
   x = 287,845,507.59/21,434.22
6. Step 6: Final answer
   x = 13,429.25