Finding the Fourth Proportional to 12,586.42, 18,861.72 and 9,273.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,586.42 : 18,861.72 = 9,273.46 : x
2. Step 2: Convert to fraction form
   12,586.42/18,861.72 = 9,273.46/x
3. Step 3: Cross multiply
   12,586.42x = 18,861.72 × 9,273.46
4. Step 4: Simplify right side
   12,586.42x = 174,913,405.95
5. Step 5: Solve for x
   x = 174,913,405.95/12,586.42
6. Step 6: Final answer
   x = 13,896.99