Finding the Fourth Proportional to 9,377.37, 12,971.34 and 8,826.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,377.37 : 12,971.34 = 8,826.57 : x
2. Step 2: Convert to fraction form
   9,377.37/12,971.34 = 8,826.57/x
3. Step 3: Cross multiply
   9,377.37x = 12,971.34 × 8,826.57
4. Step 4: Simplify right side
   9,377.37x = 114,492,440.50
5. Step 5: Solve for x
   x = 114,492,440.50/9,377.37
6. Step 6: Final answer
   x = 12,209.44