Finding the Fourth Proportional to 8,627.51, 12,936.03 and 5,627.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,627.51 : 12,936.03 = 5,627.79 : x
2. Step 2: Convert to fraction form
   8,627.51/12,936.03 = 5,627.79/x
3. Step 3: Cross multiply
   8,627.51x = 12,936.03 × 5,627.79
4. Step 4: Simplify right side
   8,627.51x = 72,801,281.38
5. Step 5: Solve for x
   x = 72,801,281.38/8,627.51
6. Step 6: Final answer
   x = 8,438.27