Finding the Fourth Proportional to 38,667.18, 57,991.32 and 12,366.48

Step by Step Solution

1. Step 1: Write the proportion equation
   38,667.18 : 57,991.32 = 12,366.48 : x
2. Step 2: Convert to fraction form
   38,667.18/57,991.32 = 12,366.48/x
3. Step 3: Cross multiply
   38,667.18x = 57,991.32 × 12,366.48
4. Step 4: Simplify right side
   38,667.18x = 717,148,498.95
5. Step 5: Solve for x
   x = 717,148,498.95/38,667.18
6. Step 6: Final answer
   x = 18,546.70