Finding the Fourth Proportional to 10,087.49, 15,131.30 and 3,513.65

Step by Step Solution

1. Step 1: Write the proportion equation
   10,087.49 : 15,131.30 = 3,513.65 : x
2. Step 2: Convert to fraction form
   10,087.49/15,131.30 = 3,513.65/x
3. Step 3: Cross multiply
   10,087.49x = 15,131.30 × 3,513.65
4. Step 4: Simplify right side
   10,087.49x = 53,166,101.03
5. Step 5: Solve for x
   x = 53,166,101.03/10,087.49
6. Step 6: Final answer
   x = 5,270.50