Finding the Fourth Proportional to 8,772.04, 12,109.56 and 5,630.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,772.04 : 12,109.56 = 5,630.12 : x
2. Step 2: Convert to fraction form
   8,772.04/12,109.56 = 5,630.12/x
3. Step 3: Cross multiply
   8,772.04x = 12,109.56 × 5,630.12
4. Step 4: Simplify right side
   8,772.04x = 68,178,275.95
5. Step 5: Solve for x
   x = 68,178,275.95/8,772.04
6. Step 6: Final answer
   x = 7,772.23