Finding the Fourth Proportional to 8,460.19, 12,680.89 and 4,291.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,460.19 : 12,680.89 = 4,291.59 : x
2. Step 2: Convert to fraction form
   8,460.19/12,680.89 = 4,291.59/x
3. Step 3: Cross multiply
   8,460.19x = 12,680.89 × 4,291.59
4. Step 4: Simplify right side
   8,460.19x = 54,421,180.72
5. Step 5: Solve for x
   x = 54,421,180.72/8,460.19
6. Step 6: Final answer
   x = 6,432.62