Finding the Fourth Proportional to 3,666.35, 5,498.67 and 2,185.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666.35 : 5,498.67 = 2,185.98 : x
2. Step 2: Convert to fraction form
   3,666.35/5,498.67 = 2,185.98/x
3. Step 3: Cross multiply
   3,666.35x = 5,498.67 × 2,185.98
4. Step 4: Simplify right side
   3,666.35x = 12,020,010.47
5. Step 5: Solve for x
   x = 12,020,010.47/3,666.35
6. Step 6: Final answer
   x = 3,278.47