Finding the Fourth Proportional to 8,632.58, 12,939.86 and 5,859.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,632.58 : 12,939.86 = 5,859.47 : x
2. Step 2: Convert to fraction form
   8,632.58/12,939.86 = 5,859.47/x
3. Step 3: Cross multiply
   8,632.58x = 12,939.86 × 5,859.47
4. Step 4: Simplify right side
   8,632.58x = 75,820,627.48
5. Step 5: Solve for x
   x = 75,820,627.48/8,632.58
6. Step 6: Final answer
   x = 8,783.08