Finding the Fourth Proportional to 21,856.59, 32,786.73 and 7,067.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,856.59 : 32,786.73 = 7,067.91 : x
2. Step 2: Convert to fraction form
   21,856.59/32,786.73 = 7,067.91/x
3. Step 3: Cross multiply
   21,856.59x = 32,786.73 × 7,067.91
4. Step 4: Simplify right side
   21,856.59x = 231,733,656.83
5. Step 5: Solve for x
   x = 231,733,656.83/21,856.59
6. Step 6: Final answer
   x = 10,602.46