Finding the Fourth Proportional to 9,908.05, 13,673.43 and 5,431.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,908.05 : 13,673.43 = 5,431.81 : x
2. Step 2: Convert to fraction form
   9,908.05/13,673.43 = 5,431.81/x
3. Step 3: Cross multiply
   9,908.05x = 13,673.43 × 5,431.81
4. Step 4: Simplify right side
   9,908.05x = 74,271,473.81
5. Step 5: Solve for x
   x = 74,271,473.81/9,908.05
6. Step 6: Final answer
   x = 7,496.07