Finding the Fourth Proportional to 8,784.55, 12,122.15 and 5,007.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,784.55 : 12,122.15 = 5,007.18 : x
2. Step 2: Convert to fraction form
   8,784.55/12,122.15 = 5,007.18/x
3. Step 3: Cross multiply
   8,784.55x = 12,122.15 × 5,007.18
4. Step 4: Simplify right side
   8,784.55x = 60,697,787.04
5. Step 5: Solve for x
   x = 60,697,787.04/8,784.55
6. Step 6: Final answer
   x = 6,909.61