Finding the Fourth Proportional to 13,661.25, 18,851.50 and 7,693.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,661.25 : 18,851.50 = 7,693.47 : x
2. Step 2: Convert to fraction form
   13,661.25/18,851.50 = 7,693.47/x
3. Step 3: Cross multiply
   13,661.25x = 18,851.50 × 7,693.47
4. Step 4: Simplify right side
   13,661.25x = 145,033,449.71
5. Step 5: Solve for x
   x = 145,033,449.71/13,661.25
6. Step 6: Final answer
   x = 10,616.41