Finding the Fourth Proportional to 8,986.74, 12,401.72 and 5,007.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,986.74 : 12,401.72 = 5,007.77 : x
2. Step 2: Convert to fraction form
   8,986.74/12,401.72 = 5,007.77/x
3. Step 3: Cross multiply
   8,986.74x = 12,401.72 × 5,007.77
4. Step 4: Simplify right side
   8,986.74x = 62,104,939.60
5. Step 5: Solve for x
   x = 62,104,939.60/8,986.74
6. Step 6: Final answer
   x = 6,910.73