Finding the Fourth Proportional to 8,385.34, 11,559.57 and 5,859.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,385.34 : 11,559.57 = 5,859.60 : x
2. Step 2: Convert to fraction form
   8,385.34/11,559.57 = 5,859.60/x
3. Step 3: Cross multiply
   8,385.34x = 11,559.57 × 5,859.60
4. Step 4: Simplify right side
   8,385.34x = 67,734,521.69
5. Step 5: Solve for x
   x = 67,734,521.69/8,385.34
6. Step 6: Final answer
   x = 8,077.73