Finding the Fourth Proportional to 8,409.34, 12,606.69 and 3,475.90

Step by Step Solution

1. Step 1: Write the proportion equation
   8,409.34 : 12,606.69 = 3,475.90 : x
2. Step 2: Convert to fraction form
   8,409.34/12,606.69 = 3,475.90/x
3. Step 3: Cross multiply
   8,409.34x = 12,606.69 × 3,475.90
4. Step 4: Simplify right side
   8,409.34x = 43,819,593.77
5. Step 5: Solve for x
   x = 43,819,593.77/8,409.34
6. Step 6: Final answer
   x = 5,210.82