Finding the Fourth Proportional to 11,067.58, 16,603.80 and 5,221

Step by Step Solution

1. Step 1: Write the proportion equation
   11,067.58 : 16,603.80 = 5,221 : x
2. Step 2: Convert to fraction form
   11,067.58/16,603.80 = 5,221/x
3. Step 3: Cross multiply
   11,067.58x = 16,603.80 × 5,221
4. Step 4: Simplify right side
   11,067.58x = 86,688,439.80
5. Step 5: Solve for x
   x = 86,688,439.80/11,067.58
6. Step 6: Final answer
   x = 7,832.65