Finding the Fourth Proportional to 17,119.51, 25,637.31 and 14,139.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,119.51 : 25,637.31 = 14,139.72 : x
2. Step 2: Convert to fraction form
   17,119.51/25,637.31 = 14,139.72/x
3. Step 3: Cross multiply
   17,119.51x = 25,637.31 × 14,139.72
4. Step 4: Simplify right side
   17,119.51x = 362,504,384.95
5. Step 5: Solve for x
   x = 362,504,384.95/17,119.51
6. Step 6: Final answer
   x = 21,174.93