Finding the Fourth Proportional to 9,885.07, 13,641.43 and 5,408.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,885.07 : 13,641.43 = 5,408.81 : x
2. Step 2: Convert to fraction form
   9,885.07/13,641.43 = 5,408.81/x
3. Step 3: Cross multiply
   9,885.07x = 13,641.43 × 5,408.81
4. Step 4: Simplify right side
   9,885.07x = 73,783,834.79
5. Step 5: Solve for x
   x = 73,783,834.79/9,885.07
6. Step 6: Final answer
   x = 7,464.17