Finding the Fourth Proportional to 10,141.61, 15,196.74 and 7,915.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,141.61 : 15,196.74 = 7,915.17 : x
2. Step 2: Convert to fraction form
   10,141.61/15,196.74 = 7,915.17/x
3. Step 3: Cross multiply
   10,141.61x = 15,196.74 × 7,915.17
4. Step 4: Simplify right side
   10,141.61x = 120,284,780.55
5. Step 5: Solve for x
   x = 120,284,780.55/10,141.61
6. Step 6: Final answer
   x = 11,860.52