Finding the Fourth Proportional to 9,834.54, 13,571.99 and 5,358.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,834.54 : 13,571.99 = 5,358.07 : x
2. Step 2: Convert to fraction form
   9,834.54/13,571.99 = 5,358.07/x
3. Step 3: Cross multiply
   9,834.54x = 13,571.99 × 5,358.07
4. Step 4: Simplify right side
   9,834.54x = 72,719,672.46
5. Step 5: Solve for x
   x = 72,719,672.46/9,834.54
6. Step 6: Final answer
   x = 7,394.31