Finding the Fourth Proportional to 8,610.86, 12,900.69 and 7,233.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,610.86 : 12,900.69 = 7,233.05 : x
2. Step 2: Convert to fraction form
   8,610.86/12,900.69 = 7,233.05/x
3. Step 3: Cross multiply
   8,610.86x = 12,900.69 × 7,233.05
4. Step 4: Simplify right side
   8,610.86x = 93,311,271.30
5. Step 5: Solve for x
   x = 93,311,271.30/8,610.86
6. Step 6: Final answer
   x = 10,836.47