Finding the Fourth Proportional to 9,126.57, 12,594.94 and 5,587.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,126.57 : 12,594.94 = 5,587.79 : x
2. Step 2: Convert to fraction form
   9,126.57/12,594.94 = 5,587.79/x
3. Step 3: Cross multiply
   9,126.57x = 12,594.94 × 5,587.79
4. Step 4: Simplify right side
   9,126.57x = 70,377,834.27
5. Step 5: Solve for x
   x = 70,377,834.27/9,126.57
6. Step 6: Final answer
   x = 7,711.31