Finding the Fourth Proportional to 10,087.11, 15,132.72 and 3,513.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,087.11 : 15,132.72 = 3,513.81 : x
2. Step 2: Convert to fraction form
   10,087.11/15,132.72 = 3,513.81/x
3. Step 3: Cross multiply
   10,087.11x = 15,132.72 × 3,513.81
4. Step 4: Simplify right side
   10,087.11x = 53,173,502.86
5. Step 5: Solve for x
   x = 53,173,502.86/10,087.11
6. Step 6: Final answer
   x = 5,271.43