Finding the Fourth Proportional to 13,317.94, 18,381 and 12,727.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,317.94 : 18,381 = 12,727.45 : x
2. Step 2: Convert to fraction form
   13,317.94/18,381 = 12,727.45/x
3. Step 3: Cross multiply
   13,317.94x = 18,381 × 12,727.45
4. Step 4: Simplify right side
   13,317.94x = 233,943,258.45
5. Step 5: Solve for x
   x = 233,943,258.45/13,317.94
6. Step 6: Final answer
   x = 17,566.02