Finding the Fourth Proportional to 8,784.50, 12,122.06 and 5,007.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,784.50 : 12,122.06 = 5,007.12 : x
2. Step 2: Convert to fraction form
   8,784.50/12,122.06 = 5,007.12/x
3. Step 3: Cross multiply
   8,784.50x = 12,122.06 × 5,007.12
4. Step 4: Simplify right side
   8,784.50x = 60,696,584.03
5. Step 5: Solve for x
   x = 60,696,584.03/8,784.50
6. Step 6: Final answer
   x = 6,909.51