Finding the Fourth Proportional to 9,918.22, 13,687.35 and 5,441.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,918.22 : 13,687.35 = 5,441.71 : x
2. Step 2: Convert to fraction form
   9,918.22/13,687.35 = 5,441.71/x
3. Step 3: Cross multiply
   9,918.22x = 13,687.35 × 5,441.71
4. Step 4: Simplify right side
   9,918.22x = 74,482,589.37
5. Step 5: Solve for x
   x = 74,482,589.37/9,918.22
6. Step 6: Final answer
   x = 7,509.67