Finding the Fourth Proportional to 11,387.31, 17,085.89 and 6,116.17

Step by Step Solution

1. Step 1: Write the proportion equation
   11,387.31 : 17,085.89 = 6,116.17 : x
2. Step 2: Convert to fraction form
   11,387.31/17,085.89 = 6,116.17/x
3. Step 3: Cross multiply
   11,387.31x = 17,085.89 × 6,116.17
4. Step 4: Simplify right side
   11,387.31x = 104,500,196.40
5. Step 5: Solve for x
   x = 104,500,196.40/11,387.31
6. Step 6: Final answer
   x = 9,176.90