Finding the Fourth Proportional to 10,087.98, 15,133.38 and 3,513.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,087.98 : 15,133.38 = 3,513.21 : x
2. Step 2: Convert to fraction form
   10,087.98/15,133.38 = 3,513.21/x
3. Step 3: Cross multiply
   10,087.98x = 15,133.38 × 3,513.21
4. Step 4: Simplify right side
   10,087.98x = 53,166,741.95
5. Step 5: Solve for x
   x = 53,166,741.95/10,087.98
6. Step 6: Final answer
   x = 5,270.31