Finding the Fourth Proportional to 12,017.57, 16,577.46 and 8,474.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,017.57 : 16,577.46 = 8,474.63 : x
2. Step 2: Convert to fraction form
   12,017.57/16,577.46 = 8,474.63/x
3. Step 3: Cross multiply
   12,017.57x = 16,577.46 × 8,474.63
4. Step 4: Simplify right side
   12,017.57x = 140,487,756.95
5. Step 5: Solve for x
   x = 140,487,756.95/12,017.57
6. Step 6: Final answer
   x = 11,690.20