Finding the Fourth Proportional to 39,433.36, 59,156.76 and 13,144.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,433.36 : 59,156.76 = 13,144.72 : x
2. Step 2: Convert to fraction form
   39,433.36/59,156.76 = 13,144.72/x
3. Step 3: Cross multiply
   39,433.36x = 59,156.76 × 13,144.72
4. Step 4: Simplify right side
   39,433.36x = 777,599,046.31
5. Step 5: Solve for x
   x = 777,599,046.31/39,433.36
6. Step 6: Final answer
   x = 19,719.32