Finding the Fourth Proportional to 9,501.90, 13,116.32 and 8,505.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,501.90 : 13,116.32 = 8,505.45 : x
2. Step 2: Convert to fraction form
   9,501.90/13,116.32 = 8,505.45/x
3. Step 3: Cross multiply
   9,501.90x = 13,116.32 × 8,505.45
4. Step 4: Simplify right side
   9,501.90x = 111,560,161.42
5. Step 5: Solve for x
   x = 111,560,161.42/9,501.90
6. Step 6: Final answer
   x = 11,740.83