Finding the Fourth Proportional to 8,131.84, 12,195.71 and 3,450.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.84 : 12,195.71 = 3,450.45 : x
2. Step 2: Convert to fraction form
   8,131.84/12,195.71 = 3,450.45/x
3. Step 3: Cross multiply
   8,131.84x = 12,195.71 × 3,450.45
4. Step 4: Simplify right side
   8,131.84x = 42,080,679.80
5. Step 5: Solve for x
   x = 42,080,679.80/8,131.84
6. Step 6: Final answer
   x = 5,174.80