Finding the Fourth Proportional to 39,123.57, 58,667.94 and 12,464.66

Step by Step Solution

1. Step 1: Write the proportion equation
   39,123.57 : 58,667.94 = 12,464.66 : x
2. Step 2: Convert to fraction form
   39,123.57/58,667.94 = 12,464.66/x
3. Step 3: Cross multiply
   39,123.57x = 58,667.94 × 12,464.66
4. Step 4: Simplify right side
   39,123.57x = 731,275,631.66
5. Step 5: Solve for x
   x = 731,275,631.66/39,123.57
6. Step 6: Final answer
   x = 18,691.43