Finding the Fourth Proportional to 3,984.30, 5,498.37 and 2,191.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,984.30 : 5,498.37 = 2,191.77 : x
2. Step 2: Convert to fraction form
   3,984.30/5,498.37 = 2,191.77/x
3. Step 3: Cross multiply
   3,984.30x = 5,498.37 × 2,191.77
4. Step 4: Simplify right side
   3,984.30x = 12,051,162.41
5. Step 5: Solve for x
   x = 12,051,162.41/3,984.30
6. Step 6: Final answer
   x = 3,024.66