Finding the Fourth Proportional to 43,215.75, 64,834.56 and 12,051

Step by Step Solution

1. Step 1: Write the proportion equation
   43,215.75 : 64,834.56 = 12,051 : x
2. Step 2: Convert to fraction form
   43,215.75/64,834.56 = 12,051/x
3. Step 3: Cross multiply
   43,215.75x = 64,834.56 × 12,051
4. Step 4: Simplify right side
   43,215.75x = 781,321,282.56
5. Step 5: Solve for x
   x = 781,321,282.56/43,215.75
6. Step 6: Final answer
   x = 18,079.55