Finding the Fourth Proportional to 39,010.56, 58,504.72 and 12,717.60

Step by Step Solution

1. Step 1: Write the proportion equation
   39,010.56 : 58,504.72 = 12,717.60 : x
2. Step 2: Convert to fraction form
   39,010.56/58,504.72 = 12,717.60/x
3. Step 3: Cross multiply
   39,010.56x = 58,504.72 × 12,717.60
4. Step 4: Simplify right side
   39,010.56x = 744,039,627.07
5. Step 5: Solve for x
   x = 744,039,627.07/39,010.56
6. Step 6: Final answer
   x = 19,072.77