Finding the Fourth Proportional to 21,654.47, 29,883.33 and 12,702.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,654.47 : 29,883.33 = 12,702.15 : x
2. Step 2: Convert to fraction form
   21,654.47/29,883.33 = 12,702.15/x
3. Step 3: Cross multiply
   21,654.47x = 29,883.33 × 12,702.15
4. Step 4: Simplify right side
   21,654.47x = 379,582,540.16
5. Step 5: Solve for x
   x = 379,582,540.16/21,654.47
6. Step 6: Final answer
   x = 17,529.06