Finding the Fourth Proportional to 12,387.39, 17,096.89 and 7,082.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,387.39 : 17,096.89 = 7,082.17 : x
2. Step 2: Convert to fraction form
   12,387.39/17,096.89 = 7,082.17/x
3. Step 3: Cross multiply
   12,387.39x = 17,096.89 × 7,082.17
4. Step 4: Simplify right side
   12,387.39x = 121,083,081.45
5. Step 5: Solve for x
   x = 121,083,081.45/12,387.39
6. Step 6: Final answer
   x = 9,774.70