Finding the Fourth Proportional to 6,406.06, 8,840.61 and 3,611.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,406.06 : 8,840.61 = 3,611.50 : x
2. Step 2: Convert to fraction form
   6,406.06/8,840.61 = 3,611.50/x
3. Step 3: Cross multiply
   6,406.06x = 8,840.61 × 3,611.50
4. Step 4: Simplify right side
   6,406.06x = 31,927,863.02
5. Step 5: Solve for x
   x = 31,927,863.02/6,406.06
6. Step 6: Final answer
   x = 4,984.01