Finding the Fourth Proportional to 13,460.94, 18,498.18 and 12,843.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,460.94 : 18,498.18 = 12,843.54 : x
2. Step 2: Convert to fraction form
   13,460.94/18,498.18 = 12,843.54/x
3. Step 3: Cross multiply
   13,460.94x = 18,498.18 × 12,843.54
4. Step 4: Simplify right side
   13,460.94x = 237,582,114.76
5. Step 5: Solve for x
   x = 237,582,114.76/13,460.94
6. Step 6: Final answer
   x = 17,649.74