Finding the Fourth Proportional to 17,630.72, 26,427.42 and 13,461.68

Step by Step Solution

1. Step 1: Write the proportion equation
   17,630.72 : 26,427.42 = 13,461.68 : x
2. Step 2: Convert to fraction form
   17,630.72/26,427.42 = 13,461.68/x
3. Step 3: Cross multiply
   17,630.72x = 26,427.42 × 13,461.68
4. Step 4: Simplify right side
   17,630.72x = 355,757,471.27
5. Step 5: Solve for x
   x = 355,757,471.27/17,630.72
6. Step 6: Final answer
   x = 20,178.27