Finding the Fourth Proportional to 12,670.55, 17,485.84 and 8,414.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,670.55 : 17,485.84 = 8,414.24 : x
2. Step 2: Convert to fraction form
   12,670.55/17,485.84 = 8,414.24/x
3. Step 3: Cross multiply
   12,670.55x = 17,485.84 × 8,414.24
4. Step 4: Simplify right side
   12,670.55x = 147,130,077.04
5. Step 5: Solve for x
   x = 147,130,077.04/12,670.55
6. Step 6: Final answer
   x = 11,611.98