Finding the Fourth Proportional to 8,757.76, 12,085.70 and 5,613.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,757.76 : 12,085.70 = 5,613.94 : x
2. Step 2: Convert to fraction form
   8,757.76/12,085.70 = 5,613.94/x
3. Step 3: Cross multiply
   8,757.76x = 12,085.70 × 5,613.94
4. Step 4: Simplify right side
   8,757.76x = 67,848,394.66
5. Step 5: Solve for x
   x = 67,848,394.66/8,757.76
6. Step 6: Final answer
   x = 7,747.23