Finding the Fourth Proportional to 9,783.69, 13,491.56 and 8,372.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,783.69 : 13,491.56 = 8,372.06 : x
2. Step 2: Convert to fraction form
   9,783.69/13,491.56 = 8,372.06/x
3. Step 3: Cross multiply
   9,783.69x = 13,491.56 × 8,372.06
4. Step 4: Simplify right side
   9,783.69x = 112,952,153.88
5. Step 5: Solve for x
   x = 112,952,153.88/9,783.69
6. Step 6: Final answer
   x = 11,544.95