Finding the Fourth Proportional to 17,085.93, 23,579.17 and 9,915.29

Step by Step Solution

1. Step 1: Write the proportion equation
   17,085.93 : 23,579.17 = 9,915.29 : x
2. Step 2: Convert to fraction form
   17,085.93/23,579.17 = 9,915.29/x
3. Step 3: Cross multiply
   17,085.93x = 23,579.17 × 9,915.29
4. Step 4: Simplify right side
   17,085.93x = 233,794,342.67
5. Step 5: Solve for x
   x = 233,794,342.67/17,085.93
6. Step 6: Final answer
   x = 13,683.44