Finding the Fourth Proportional to 11,915.15, 17,863.38 and 7,523.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,915.15 : 17,863.38 = 7,523.38 : x
2. Step 2: Convert to fraction form
   11,915.15/17,863.38 = 7,523.38/x
3. Step 3: Cross multiply
   11,915.15x = 17,863.38 × 7,523.38
4. Step 4: Simplify right side
   11,915.15x = 134,392,868.89
5. Step 5: Solve for x
   x = 134,392,868.89/11,915.15
6. Step 6: Final answer
   x = 11,279.16