Finding the Fourth Proportional to 9,873.88, 13,626.42 and 5,397.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,873.88 : 13,626.42 = 5,397.96 : x
2. Step 2: Convert to fraction form
   9,873.88/13,626.42 = 5,397.96/x
3. Step 3: Cross multiply
   9,873.88x = 13,626.42 × 5,397.96
4. Step 4: Simplify right side
   9,873.88x = 73,554,870.10
5. Step 5: Solve for x
   x = 73,554,870.10/9,873.88
6. Step 6: Final answer
   x = 7,449.44