Finding the Fourth Proportional to 8,974.56, 13,460.88 and 3,131.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,974.56 : 13,460.88 = 3,131.28 : x
2. Step 2: Convert to fraction form
   8,974.56/13,460.88 = 3,131.28/x
3. Step 3: Cross multiply
   8,974.56x = 13,460.88 × 3,131.28
4. Step 4: Simplify right side
   8,974.56x = 42,149,784.33
5. Step 5: Solve for x
   x = 42,149,784.33/8,974.56
6. Step 6: Final answer
   x = 4,696.59