Finding the Fourth Proportional to 8,900.95, 12,272.15 and 5,708.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,900.95 : 12,272.15 = 5,708.62 : x
2. Step 2: Convert to fraction form
   8,900.95/12,272.15 = 5,708.62/x
3. Step 3: Cross multiply
   8,900.95x = 12,272.15 × 5,708.62
4. Step 4: Simplify right side
   8,900.95x = 70,057,003.12
5. Step 5: Solve for x
   x = 70,057,003.12/8,900.95
6. Step 6: Final answer
   x = 7,870.73