Finding the Fourth Proportional to 12,358.50, 18,491.25 and 8,667.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,358.50 : 18,491.25 = 8,667.93 : x
2. Step 2: Convert to fraction form
   12,358.50/18,491.25 = 8,667.93/x
3. Step 3: Cross multiply
   12,358.50x = 18,491.25 × 8,667.93
4. Step 4: Simplify right side
   12,358.50x = 160,280,860.61
5. Step 5: Solve for x
   x = 160,280,860.61/12,358.50
6. Step 6: Final answer
   x = 12,969.28