Finding the Fourth Proportional to 21,522.25, 29,702.22 and 12,090.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,522.25 : 29,702.22 = 12,090.82 : x
2. Step 2: Convert to fraction form
   21,522.25/29,702.22 = 12,090.82/x
3. Step 3: Cross multiply
   21,522.25x = 29,702.22 × 12,090.82
4. Step 4: Simplify right side
   21,522.25x = 359,124,195.62
5. Step 5: Solve for x
   x = 359,124,195.62/21,522.25
6. Step 6: Final answer
   x = 16,686.18