Finding the Fourth Proportional to 21,524.84, 29,704.56 and 13,026.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,524.84 : 29,704.56 = 13,026.86 : x
2. Step 2: Convert to fraction form
   21,524.84/29,704.56 = 13,026.86/x
3. Step 3: Cross multiply
   21,524.84x = 29,704.56 × 13,026.86
4. Step 4: Simplify right side
   21,524.84x = 386,957,144.48
5. Step 5: Solve for x
   x = 386,957,144.48/21,524.84
6. Step 6: Final answer
   x = 17,977.24