Finding the Fourth Proportional to 6,401.34, 8,831.80 and 3,606.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,401.34 : 8,831.80 = 3,606.30 : x
2. Step 2: Convert to fraction form
   6,401.34/8,831.80 = 3,606.30/x
3. Step 3: Cross multiply
   6,401.34x = 8,831.80 × 3,606.30
4. Step 4: Simplify right side
   6,401.34x = 31,850,120.34
5. Step 5: Solve for x
   x = 31,850,120.34/6,401.34
6. Step 6: Final answer
   x = 4,975.54