Finding the Fourth Proportional to 22,131.51, 33,196.05 and 8,985.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,131.51 : 33,196.05 = 8,985.21 : x
2. Step 2: Convert to fraction form
   22,131.51/33,196.05 = 8,985.21/x
3. Step 3: Cross multiply
   22,131.51x = 33,196.05 × 8,985.21
4. Step 4: Simplify right side
   22,131.51x = 298,273,480.42
5. Step 5: Solve for x
   x = 298,273,480.42/22,131.51
6. Step 6: Final answer
   x = 13,477.32