Finding the Fourth Proportional to 12,386.13, 17,092.89 and 7,084.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,386.13 : 17,092.89 = 7,084.05 : x
2. Step 2: Convert to fraction form
   12,386.13/17,092.89 = 7,084.05/x
3. Step 3: Cross multiply
   12,386.13x = 17,092.89 × 7,084.05
4. Step 4: Simplify right side
   12,386.13x = 121,086,887.40
5. Step 5: Solve for x
   x = 121,086,887.40/12,386.13
6. Step 6: Final answer
   x = 9,776.01