Finding the Fourth Proportional to 12,646.95, 17,453.98 and 9,454.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,646.95 : 17,453.98 = 9,454.72 : x
2. Step 2: Convert to fraction form
   12,646.95/17,453.98 = 9,454.72/x
3. Step 3: Cross multiply
   12,646.95x = 17,453.98 × 9,454.72
4. Step 4: Simplify right side
   12,646.95x = 165,022,494.70
5. Step 5: Solve for x
   x = 165,022,494.70/12,646.95
6. Step 6: Final answer
   x = 13,048.40