Finding the Fourth Proportional to 10,191.77, 15,286.91 and 3,171.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,191.77 : 15,286.91 = 3,171.59 : x
2. Step 2: Convert to fraction form
   10,191.77/15,286.91 = 3,171.59/x
3. Step 3: Cross multiply
   10,191.77x = 15,286.91 × 3,171.59
4. Step 4: Simplify right side
   10,191.77x = 48,483,718.59
5. Step 5: Solve for x
   x = 48,483,718.59/10,191.77
6. Step 6: Final answer
   x = 4,757.15