Finding the Fourth Proportional to 10,915.76, 16,375.60 and 3,519.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,915.76 : 16,375.60 = 3,519.52 : x
2. Step 2: Convert to fraction form
   10,915.76/16,375.60 = 3,519.52/x
3. Step 3: Cross multiply
   10,915.76x = 16,375.60 × 3,519.52
4. Step 4: Simplify right side
   10,915.76x = 57,634,251.71
5. Step 5: Solve for x
   x = 57,634,251.71/10,915.76
6. Step 6: Final answer
   x = 5,279.91