Finding the Fourth Proportional to 8,900.68, 12,281.86 and 4,921.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,900.68 : 12,281.86 = 4,921.25 : x
2. Step 2: Convert to fraction form
   8,900.68/12,281.86 = 4,921.25/x
3. Step 3: Cross multiply
   8,900.68x = 12,281.86 × 4,921.25
4. Step 4: Simplify right side
   8,900.68x = 60,442,103.53
5. Step 5: Solve for x
   x = 60,442,103.53/8,900.68
6. Step 6: Final answer
   x = 6,790.73