Finding the Fourth Proportional to 8,951.59, 13,314.69 and 8,921.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,951.59 : 13,314.69 = 8,921.62 : x
2. Step 2: Convert to fraction form
   8,951.59/13,314.69 = 8,921.62/x
3. Step 3: Cross multiply
   8,951.59x = 13,314.69 × 8,921.62
4. Step 4: Simplify right side
   8,951.59x = 118,788,604.60
5. Step 5: Solve for x
   x = 118,788,604.60/8,951.59
6. Step 6: Final answer
   x = 13,270.11