Finding the Fourth Proportional to 8,791.49, 12,131.82 and 4,812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,791.49 : 12,131.82 = 4,812.50 : x
2. Step 2: Convert to fraction form
   8,791.49/12,131.82 = 4,812.50/x
3. Step 3: Cross multiply
   8,791.49x = 12,131.82 × 4,812.50
4. Step 4: Simplify right side
   8,791.49x = 58,384,383.75
5. Step 5: Solve for x
   x = 58,384,383.75/8,791.49
6. Step 6: Final answer
   x = 6,641.01