Finding the Fourth Proportional to 8,406.89, 12,599.00 and 3,209.93

Step by Step Solution

1. Step 1: Write the proportion equation
   8,406.89 : 12,599.00 = 3,209.93 : x
2. Step 2: Convert to fraction form
   8,406.89/12,599.00 = 3,209.93/x
3. Step 3: Cross multiply
   8,406.89x = 12,599.00 × 3,209.93
4. Step 4: Simplify right side
   8,406.89x = 40,441,892.02
5. Step 5: Solve for x
   x = 40,441,892.02/8,406.89
6. Step 6: Final answer
   x = 4,810.57