Finding the Fourth Proportional to 8,900.02, 12,281.21 and 4,921.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,900.02 : 12,281.21 = 4,921.05 : x
2. Step 2: Convert to fraction form
   8,900.02/12,281.21 = 4,921.05/x
3. Step 3: Cross multiply
   8,900.02x = 12,281.21 × 4,921.05
4. Step 4: Simplify right side
   8,900.02x = 60,436,423.87
5. Step 5: Solve for x
   x = 60,436,423.87/8,900.02
6. Step 6: Final answer
   x = 6,790.59