Finding the Fourth Proportional to 9,983.40, 13,795.31 and 8,547.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,983.40 : 13,795.31 = 8,547.50 : x
2. Step 2: Convert to fraction form
   9,983.40/13,795.31 = 8,547.50/x
3. Step 3: Cross multiply
   9,983.40x = 13,795.31 × 8,547.50
4. Step 4: Simplify right side
   9,983.40x = 117,915,399.16
5. Step 5: Solve for x
   x = 117,915,399.16/9,983.40
6. Step 6: Final answer
   x = 11,811.15