Finding the Fourth Proportional to 8,595.90, 12,879.45 and 5,672.70

Step by Step Solution

1. Step 1: Write the proportion equation
   8,595.90 : 12,879.45 = 5,672.70 : x
2. Step 2: Convert to fraction form
   8,595.90/12,879.45 = 5,672.70/x
3. Step 3: Cross multiply
   8,595.90x = 12,879.45 × 5,672.70
4. Step 4: Simplify right side
   8,595.90x = 73,061,256.02
5. Step 5: Solve for x
   x = 73,061,256.02/8,595.90
6. Step 6: Final answer
   x = 8,499.55