Finding the Fourth Proportional to 8,974.43, 13,461.72 and 3,131.03

Step by Step Solution

1. Step 1: Write the proportion equation
   8,974.43 : 13,461.72 = 3,131.03 : x
2. Step 2: Convert to fraction form
   8,974.43/13,461.72 = 3,131.03/x
3. Step 3: Cross multiply
   8,974.43x = 13,461.72 × 3,131.03
4. Step 4: Simplify right side
   8,974.43x = 42,149,049.17
5. Step 5: Solve for x
   x = 42,149,049.17/8,974.43
6. Step 6: Final answer
   x = 4,696.57