Finding the Fourth Proportional to 9,105.95, 13,668.64 and 3,915.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.95 : 13,668.64 = 3,915.47 : x
2. Step 2: Convert to fraction form
   9,105.95/13,668.64 = 3,915.47/x
3. Step 3: Cross multiply
   9,105.95x = 13,668.64 × 3,915.47
4. Step 4: Simplify right side
   9,105.95x = 53,519,149.86
5. Step 5: Solve for x
   x = 53,519,149.86/9,105.95
6. Step 6: Final answer
   x = 5,877.38