Finding the Fourth Proportional to 8,984.43, 12,400.10 and 5,630.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,984.43 : 12,400.10 = 5,630.12 : x
2. Step 2: Convert to fraction form
   8,984.43/12,400.10 = 5,630.12/x
3. Step 3: Cross multiply
   8,984.43x = 12,400.10 × 5,630.12
4. Step 4: Simplify right side
   8,984.43x = 69,814,051.01
5. Step 5: Solve for x
   x = 69,814,051.01/8,984.43
6. Step 6: Final answer
   x = 7,770.56