Finding the Fourth Proportional to 39,443.90, 59,143.97 and 13,134.29

Step by Step Solution

1. Step 1: Write the proportion equation
   39,443.90 : 59,143.97 = 13,134.29 : x
2. Step 2: Convert to fraction form
   39,443.90/59,143.97 = 13,134.29/x
3. Step 3: Cross multiply
   39,443.90x = 59,143.97 × 13,134.29
4. Step 4: Simplify right side
   39,443.90x = 776,813,790.85
5. Step 5: Solve for x
   x = 776,813,790.85/39,443.90
6. Step 6: Final answer
   x = 19,694.15