Finding the Fourth Proportional to 3,984.15, 5,498.27 and 2,191.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,984.15 : 5,498.27 = 2,191.77 : x
2. Step 2: Convert to fraction form
   3,984.15/5,498.27 = 2,191.77/x
3. Step 3: Cross multiply
   3,984.15x = 5,498.27 × 2,191.77
4. Step 4: Simplify right side
   3,984.15x = 12,050,962.46
5. Step 5: Solve for x
   x = 12,050,962.46/3,984.15
6. Step 6: Final answer
   x = 3,024.72