Finding the Fourth Proportional to 8,789.48, 12,128.28 and 5,251.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,789.48 : 12,128.28 = 5,251.94 : x
2. Step 2: Convert to fraction form
   8,789.48/12,128.28 = 5,251.94/x
3. Step 3: Cross multiply
   8,789.48x = 12,128.28 × 5,251.94
4. Step 4: Simplify right side
   8,789.48x = 63,696,998.86
5. Step 5: Solve for x
   x = 63,696,998.86/8,789.48
6. Step 6: Final answer
   x = 7,246.96