Finding the Fourth Proportional to 11,211.35, 16,818.50 and 3,813.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,211.35 : 16,818.50 = 3,813.82 : x
2. Step 2: Convert to fraction form
   11,211.35/16,818.50 = 3,813.82/x
3. Step 3: Cross multiply
   11,211.35x = 16,818.50 × 3,813.82
4. Step 4: Simplify right side
   11,211.35x = 64,142,699.16
5. Step 5: Solve for x
   x = 64,142,699.16/11,211.35
6. Step 6: Final answer
   x = 5,721.23