Finding the Fourth Proportional to 12,570.95, 17,468.21 and 12,434.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,570.95 : 17,468.21 = 12,434.27 : x
2. Step 2: Convert to fraction form
   12,570.95/17,468.21 = 12,434.27/x
3. Step 3: Cross multiply
   12,570.95x = 17,468.21 × 12,434.27
4. Step 4: Simplify right side
   12,570.95x = 217,204,383.30
5. Step 5: Solve for x
   x = 217,204,383.30/12,570.95
6. Step 6: Final answer
   x = 17,278.28