Finding the Fourth Proportional to 12,935.42, 17,854.39 and 12,151.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,935.42 : 17,854.39 = 12,151.34 : x
2. Step 2: Convert to fraction form
   12,935.42/17,854.39 = 12,151.34/x
3. Step 3: Cross multiply
   12,935.42x = 17,854.39 × 12,151.34
4. Step 4: Simplify right side
   12,935.42x = 216,954,763.38
5. Step 5: Solve for x
   x = 216,954,763.38/12,935.42
6. Step 6: Final answer
   x = 16,772.15