Finding the Fourth Proportional to 8,402.49, 12,607.34 and 3,475.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,402.49 : 12,607.34 = 3,475.71 : x
2. Step 2: Convert to fraction form
   8,402.49/12,607.34 = 3,475.71/x
3. Step 3: Cross multiply
   8,402.49x = 12,607.34 × 3,475.71
4. Step 4: Simplify right side
   8,402.49x = 43,819,440.33
5. Step 5: Solve for x
   x = 43,819,440.33/8,402.49
6. Step 6: Final answer
   x = 5,215.05