Finding the Fourth Proportional to 12,246.12, 18,390.72 and 12,070.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,246.12 : 18,390.72 = 12,070.82 : x
2. Step 2: Convert to fraction form
   12,246.12/18,390.72 = 12,070.82/x
3. Step 3: Cross multiply
   12,246.12x = 18,390.72 × 12,070.82
4. Step 4: Simplify right side
   12,246.12x = 221,990,978.84
5. Step 5: Solve for x
   x = 221,990,978.84/12,246.12
6. Step 6: Final answer
   x = 18,127.45