Finding the Fourth Proportional to 10,291.89, 15,438.15 and 3,271.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,291.89 : 15,438.15 = 3,271.98 : x
2. Step 2: Convert to fraction form
   10,291.89/15,438.15 = 3,271.98/x
3. Step 3: Cross multiply
   10,291.89x = 15,438.15 × 3,271.98
4. Step 4: Simplify right side
   10,291.89x = 50,513,318.04
5. Step 5: Solve for x
   x = 50,513,318.04/10,291.89
6. Step 6: Final answer
   x = 4,908.07