Finding the Fourth Proportional to 39,016.42, 58,530.71 and 12,715.05

Step by Step Solution

1. Step 1: Write the proportion equation
   39,016.42 : 58,530.71 = 12,715.05 : x
2. Step 2: Convert to fraction form
   39,016.42/58,530.71 = 12,715.05/x
3. Step 3: Cross multiply
   39,016.42x = 58,530.71 × 12,715.05
4. Step 4: Simplify right side
   39,016.42x = 744,220,904.19
5. Step 5: Solve for x
   x = 744,220,904.19/39,016.42
6. Step 6: Final answer
   x = 19,074.56