Finding the Fourth Proportional to 9,042.30, 12,676.50 and 9,042.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,042.30 : 12,676.50 = 9,042.30 : x
2. Step 2: Convert to fraction form
   9,042.30/12,676.50 = 9,042.30/x
3. Step 3: Cross multiply
   9,042.30x = 12,676.50 × 9,042.30
4. Step 4: Simplify right side
   9,042.30x = 114,624,715.95
5. Step 5: Solve for x
   x = 114,624,715.95/9,042.30
6. Step 6: Final answer
   x = 12,676.50