Finding the Fourth Proportional to 14,142.77, 19,559.31 and 12,371.30

Step by Step Solution

1. Step 1: Write the proportion equation
   14,142.77 : 19,559.31 = 12,371.30 : x
2. Step 2: Convert to fraction form
   14,142.77/19,559.31 = 12,371.30/x
3. Step 3: Cross multiply
   14,142.77x = 19,559.31 × 12,371.30
4. Step 4: Simplify right side
   14,142.77x = 241,974,091.80
5. Step 5: Solve for x
   x = 241,974,091.80/14,142.77
6. Step 6: Final answer
   x = 17,109.38