Finding the Fourth Proportional to 8,307.72, 12,461.49 and 2,761.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,307.72 : 12,461.49 = 2,761.47 : x
2. Step 2: Convert to fraction form
   8,307.72/12,461.49 = 2,761.47/x
3. Step 3: Cross multiply
   8,307.72x = 12,461.49 × 2,761.47
4. Step 4: Simplify right side
   8,307.72x = 34,412,030.79
5. Step 5: Solve for x
   x = 34,412,030.79/8,307.72
6. Step 6: Final answer
   x = 4,142.18