Finding the Fourth Proportional to 8,900.37, 12,280.10 and 5,363.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,900.37 : 12,280.10 = 5,363.55 : x
2. Step 2: Convert to fraction form
   8,900.37/12,280.10 = 5,363.55/x
3. Step 3: Cross multiply
   8,900.37x = 12,280.10 × 5,363.55
4. Step 4: Simplify right side
   8,900.37x = 65,864,903.54
5. Step 5: Solve for x
   x = 65,864,903.54/8,900.37
6. Step 6: Final answer
   x = 7,400.24