Finding the Fourth Proportional to 39,063.39, 58,602.37 and 12,769.57

Step by Step Solution

1. Step 1: Write the proportion equation
   39,063.39 : 58,602.37 = 12,769.57 : x
2. Step 2: Convert to fraction form
   39,063.39/58,602.37 = 12,769.57/x
3. Step 3: Cross multiply
   39,063.39x = 58,602.37 × 12,769.57
4. Step 4: Simplify right side
   39,063.39x = 748,327,065.88
5. Step 5: Solve for x
   x = 748,327,065.88/39,063.39
6. Step 6: Final answer
   x = 19,156.74