Finding the Fourth Proportional to 8,790.82, 12,131.24 and 5,013.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,790.82 : 12,131.24 = 5,013.89 : x
2. Step 2: Convert to fraction form
   8,790.82/12,131.24 = 5,013.89/x
3. Step 3: Cross multiply
   8,790.82x = 12,131.24 × 5,013.89
4. Step 4: Simplify right side
   8,790.82x = 60,824,677.85
5. Step 5: Solve for x
   x = 60,824,677.85/8,790.82
6. Step 6: Final answer
   x = 6,919.11