Finding the Fourth Proportional to 8,693.69, 13,044.65 and 3,145.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,693.69 : 13,044.65 = 3,145.55 : x
2. Step 2: Convert to fraction form
   8,693.69/13,044.65 = 3,145.55/x
3. Step 3: Cross multiply
   8,693.69x = 13,044.65 × 3,145.55
4. Step 4: Simplify right side
   8,693.69x = 41,032,517.86
5. Step 5: Solve for x
   x = 41,032,517.86/8,693.69
6. Step 6: Final answer
   x = 4,719.81