Finding the Fourth Proportional to 9,499.14, 13,116.87 and 7,137.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,499.14 : 13,116.87 = 7,137.18 : x
2. Step 2: Convert to fraction form
   9,499.14/13,116.87 = 7,137.18/x
3. Step 3: Cross multiply
   9,499.14x = 13,116.87 × 7,137.18
4. Step 4: Simplify right side
   9,499.14x = 93,617,462.23
5. Step 5: Solve for x
   x = 93,617,462.23/9,499.14
6. Step 6: Final answer
   x = 9,855.36