Finding the Fourth Proportional to 21,066.41, 29,067.86 and 12,565.36

Step by Step Solution

1. Step 1: Write the proportion equation
   21,066.41 : 29,067.86 = 12,565.36 : x
2. Step 2: Convert to fraction form
   21,066.41/29,067.86 = 12,565.36/x
3. Step 3: Cross multiply
   21,066.41x = 29,067.86 × 12,565.36
4. Step 4: Simplify right side
   21,066.41x = 365,248,062.50
5. Step 5: Solve for x
   x = 365,248,062.50/21,066.41
6. Step 6: Final answer
   x = 17,337.94