Finding the Fourth Proportional to 12,380.42, 17,084.89 and 6,715.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,380.42 : 17,084.89 = 6,715.15 : x
2. Step 2: Convert to fraction form
   12,380.42/17,084.89 = 6,715.15/x
3. Step 3: Cross multiply
   12,380.42x = 17,084.89 × 6,715.15
4. Step 4: Simplify right side
   12,380.42x = 114,727,599.08
5. Step 5: Solve for x
   x = 114,727,599.08/12,380.42
6. Step 6: Final answer
   x = 9,266.86