Finding the Fourth Proportional to 21,062.89, 29,064.22 and 12,565.45

Step by Step Solution

1. Step 1: Write the proportion equation
   21,062.89 : 29,064.22 = 12,565.45 : x
2. Step 2: Convert to fraction form
   21,062.89/29,064.22 = 12,565.45/x
3. Step 3: Cross multiply
   21,062.89x = 29,064.22 × 12,565.45
4. Step 4: Simplify right side
   21,062.89x = 365,205,003.20
5. Step 5: Solve for x
   x = 365,205,003.20/21,062.89
6. Step 6: Final answer
   x = 17,338.79