Finding the Fourth Proportional to 12,040.06, 16,618.62 and 7,847.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,040.06 : 16,618.62 = 7,847.50 : x
2. Step 2: Convert to fraction form
   12,040.06/16,618.62 = 7,847.50/x
3. Step 3: Cross multiply
   12,040.06x = 16,618.62 × 7,847.50
4. Step 4: Simplify right side
   12,040.06x = 130,414,620.45
5. Step 5: Solve for x
   x = 130,414,620.45/12,040.06
6. Step 6: Final answer
   x = 10,831.73