Finding the Fourth Proportional to 9,112.02, 12,492.57 and 8,945.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,112.02 : 12,492.57 = 8,945.94 : x
2. Step 2: Convert to fraction form
   9,112.02/12,492.57 = 8,945.94/x
3. Step 3: Cross multiply
   9,112.02x = 12,492.57 × 8,945.94
4. Step 4: Simplify right side
   9,112.02x = 111,757,781.67
5. Step 5: Solve for x
   x = 111,757,781.67/9,112.02
6. Step 6: Final answer
   x = 12,264.87