Finding the Fourth Proportional to 9,363.56, 12,938.82 and 8,907.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,363.56 : 12,938.82 = 8,907.98 : x
2. Step 2: Convert to fraction form
   9,363.56/12,938.82 = 8,907.98/x
3. Step 3: Cross multiply
   9,363.56x = 12,938.82 × 8,907.98
4. Step 4: Simplify right side
   9,363.56x = 115,258,749.78
5. Step 5: Solve for x
   x = 115,258,749.78/9,363.56
6. Step 6: Final answer
   x = 12,309.29