Finding the Fourth Proportional to 9,398.50, 12,969.94 and 5,672.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,398.50 : 12,969.94 = 5,672.50 : x
2. Step 2: Convert to fraction form
   9,398.50/12,969.94 = 5,672.50/x
3. Step 3: Cross multiply
   9,398.50x = 12,969.94 × 5,672.50
4. Step 4: Simplify right side
   9,398.50x = 73,571,984.65
5. Step 5: Solve for x
   x = 73,571,984.65/9,398.50
6. Step 6: Final answer
   x = 7,828.06