Finding the Fourth Proportional to 21,093.39, 31,641.90 and 5,511

Step by Step Solution

1. Step 1: Write the proportion equation
   21,093.39 : 31,641.90 = 5,511 : x
2. Step 2: Convert to fraction form
   21,093.39/31,641.90 = 5,511/x
3. Step 3: Cross multiply
   21,093.39x = 31,641.90 × 5,511
4. Step 4: Simplify right side
   21,093.39x = 174,378,510.90
5. Step 5: Solve for x
   x = 174,378,510.90/21,093.39
6. Step 6: Final answer
   x = 8,266.97