Finding the Fourth Proportional to 9,834.20, 13,571.02 and 5,357.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,834.20 : 13,571.02 = 5,357.98 : x
2. Step 2: Convert to fraction form
   9,834.20/13,571.02 = 5,357.98/x
3. Step 3: Cross multiply
   9,834.20x = 13,571.02 × 5,357.98
4. Step 4: Simplify right side
   9,834.20x = 72,713,233.71
5. Step 5: Solve for x
   x = 72,713,233.71/9,834.20
6. Step 6: Final answer
   x = 7,393.92