Finding the Fourth Proportional to 12,272.88, 18,412.31 and 3,953.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,272.88 : 18,412.31 = 3,953.69 : x
2. Step 2: Convert to fraction form
   12,272.88/18,412.31 = 3,953.69/x
3. Step 3: Cross multiply
   12,272.88x = 18,412.31 × 3,953.69
4. Step 4: Simplify right side
   12,272.88x = 72,796,565.92
5. Step 5: Solve for x
   x = 72,796,565.92/12,272.88
6. Step 6: Final answer
   x = 5,931.50