Finding the Fourth Proportional to 8,786.34, 12,126.51 and 5,009.51

Step by Step Solution

1. Step 1: Write the proportion equation
   8,786.34 : 12,126.51 = 5,009.51 : x
2. Step 2: Convert to fraction form
   8,786.34/12,126.51 = 5,009.51/x
3. Step 3: Cross multiply
   8,786.34x = 12,126.51 × 5,009.51
4. Step 4: Simplify right side
   8,786.34x = 60,747,903.43
5. Step 5: Solve for x
   x = 60,747,903.43/8,786.34
6. Step 6: Final answer
   x = 6,913.90