Finding the Fourth Proportional to 6,131.61, 9,199.98 and 3,211.83

Step by Step Solution

1. Step 1: Write the proportion equation
   6,131.61 : 9,199.98 = 3,211.83 : x
2. Step 2: Convert to fraction form
   6,131.61/9,199.98 = 3,211.83/x
3. Step 3: Cross multiply
   6,131.61x = 9,199.98 × 3,211.83
4. Step 4: Simplify right side
   6,131.61x = 29,548,771.76
5. Step 5: Solve for x
   x = 29,548,771.76/6,131.61
6. Step 6: Final answer
   x = 4,819.09