Finding the Fourth Proportional to 8,589.78, 11,825.56 and 7,470.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,589.78 : 11,825.56 = 7,470.12 : x
2. Step 2: Convert to fraction form
   8,589.78/11,825.56 = 7,470.12/x
3. Step 3: Cross multiply
   8,589.78x = 11,825.56 × 7,470.12
4. Step 4: Simplify right side
   8,589.78x = 88,338,381.83
5. Step 5: Solve for x
   x = 88,338,381.83/8,589.78
6. Step 6: Final answer
   x = 10,284.12