Finding the Fourth Proportional to 43,327.72, 64,981.98 and 12,162.28

Step by Step Solution

1. Step 1: Write the proportion equation
   43,327.72 : 64,981.98 = 12,162.28 : x
2. Step 2: Convert to fraction form
   43,327.72/64,981.98 = 12,162.28/x
3. Step 3: Cross multiply
   43,327.72x = 64,981.98 × 12,162.28
4. Step 4: Simplify right side
   43,327.72x = 790,329,035.71
5. Step 5: Solve for x
   x = 790,329,035.71/43,327.72
6. Step 6: Final answer
   x = 18,240.73