Finding the Fourth Proportional to 17,086.38, 23,578.53 and 9,915.93

Step by Step Solution

1. Step 1: Write the proportion equation
   17,086.38 : 23,578.53 = 9,915.93 : x
2. Step 2: Convert to fraction form
   17,086.38/23,578.53 = 9,915.93/x
3. Step 3: Cross multiply
   17,086.38x = 23,578.53 × 9,915.93
4. Step 4: Simplify right side
   17,086.38x = 233,803,052.98
5. Step 5: Solve for x
   x = 233,803,052.98/17,086.38
6. Step 6: Final answer
   x = 13,683.59