Finding the Fourth Proportional to 9,891.64, 14,837.26 and 2,871.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,891.64 : 14,837.26 = 2,871.37 : x
2. Step 2: Convert to fraction form
   9,891.64/14,837.26 = 2,871.37/x
3. Step 3: Cross multiply
   9,891.64x = 14,837.26 × 2,871.37
4. Step 4: Simplify right side
   9,891.64x = 42,603,196.54
5. Step 5: Solve for x
   x = 42,603,196.54/9,891.64
6. Step 6: Final answer
   x = 4,306.99