Finding the Fourth Proportional to 6,131.61, 8,461.37 and 3,478.97

Step by Step Solution

1. Step 1: Write the proportion equation
   6,131.61 : 8,461.37 = 3,478.97 : x
2. Step 2: Convert to fraction form
   6,131.61/8,461.37 = 3,478.97/x
3. Step 3: Cross multiply
   6,131.61x = 8,461.37 × 3,478.97
4. Step 4: Simplify right side
   6,131.61x = 29,436,818.78
5. Step 5: Solve for x
   x = 29,436,818.78/6,131.61
6. Step 6: Final answer
   x = 4,800.83