Finding the Fourth Proportional to 8,981.46, 12,390.90 and 5,622.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,981.46 : 12,390.90 = 5,622.84 : x
2. Step 2: Convert to fraction form
   8,981.46/12,390.90 = 5,622.84/x
3. Step 3: Cross multiply
   8,981.46x = 12,390.90 × 5,622.84
4. Step 4: Simplify right side
   8,981.46x = 69,672,048.16
5. Step 5: Solve for x
   x = 69,672,048.16/8,981.46
6. Step 6: Final answer
   x = 7,757.32