Finding the Fourth Proportional to 9,833.48, 13,569.74 and 5,357.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,833.48 : 13,569.74 = 5,357.21 : x
2. Step 2: Convert to fraction form
   9,833.48/13,569.74 = 5,357.21/x
3. Step 3: Cross multiply
   9,833.48x = 13,569.74 × 5,357.21
4. Step 4: Simplify right side
   9,833.48x = 72,695,920.04
5. Step 5: Solve for x
   x = 72,695,920.04/9,833.48
6. Step 6: Final answer
   x = 7,392.70