Finding the Fourth Proportional to 12,002.58, 16,544.61 and 8,460.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,002.58 : 16,544.61 = 8,460.18 : x
2. Step 2: Convert to fraction form
   12,002.58/16,544.61 = 8,460.18/x
3. Step 3: Cross multiply
   12,002.58x = 16,544.61 × 8,460.18
4. Step 4: Simplify right side
   12,002.58x = 139,970,378.63
5. Step 5: Solve for x
   x = 139,970,378.63/12,002.58
6. Step 6: Final answer
   x = 11,661.69