Finding the Fourth Proportional to 8,789.04, 12,128.54 and 5,012.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,789.04 : 12,128.54 = 5,012.42 : x
2. Step 2: Convert to fraction form
   8,789.04/12,128.54 = 5,012.42/x
3. Step 3: Cross multiply
   8,789.04x = 12,128.54 × 5,012.42
4. Step 4: Simplify right side
   8,789.04x = 60,793,250.76
5. Step 5: Solve for x
   x = 60,793,250.76/8,789.04
6. Step 6: Final answer
   x = 6,916.94