Finding the Fourth Proportional to 9,854.33, 13,598.89 and 5,378.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,854.33 : 13,598.89 = 5,378.09 : x
2. Step 2: Convert to fraction form
   9,854.33/13,598.89 = 5,378.09/x
3. Step 3: Cross multiply
   9,854.33x = 13,598.89 × 5,378.09
4. Step 4: Simplify right side
   9,854.33x = 73,135,972.88
5. Step 5: Solve for x
   x = 73,135,972.88/9,854.33
6. Step 6: Final answer
   x = 7,421.71