Finding the Fourth Proportional to 38,667.39, 57,988.72 and 12,365.88

Step by Step Solution

1. Step 1: Write the proportion equation
   38,667.39 : 57,988.72 = 12,365.88 : x
2. Step 2: Convert to fraction form
   38,667.39/57,988.72 = 12,365.88/x
3. Step 3: Cross multiply
   38,667.39x = 57,988.72 × 12,365.88
4. Step 4: Simplify right side
   38,667.39x = 717,081,552.87
5. Step 5: Solve for x
   x = 717,081,552.87/38,667.39
6. Step 6: Final answer
   x = 18,544.87