Finding the Fourth Proportional to 9,937.12, 13,683.18 and 9,718.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,937.12 : 13,683.18 = 9,718.42 : x
2. Step 2: Convert to fraction form
   9,937.12/13,683.18 = 9,718.42/x
3. Step 3: Cross multiply
   9,937.12x = 13,683.18 × 9,718.42
4. Step 4: Simplify right side
   9,937.12x = 132,978,890.18
5. Step 5: Solve for x
   x = 132,978,890.18/9,937.12
6. Step 6: Final answer
   x = 13,382.04