Finding the Fourth Proportional to 3,985.18, 5,501.82 and 2,660.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,985.18 : 5,501.82 = 2,660.83 : x
2. Step 2: Convert to fraction form
   3,985.18/5,501.82 = 2,660.83/x
3. Step 3: Cross multiply
   3,985.18x = 5,501.82 × 2,660.83
4. Step 4: Simplify right side
   3,985.18x = 14,639,407.71
5. Step 5: Solve for x
   x = 14,639,407.71/3,985.18
6. Step 6: Final answer
   x = 3,673.46