Finding the Fourth Proportional to 43,238.52, 64,836.18 and 19,845

Step by Step Solution

1. Step 1: Write the proportion equation
   43,238.52 : 64,836.18 = 19,845 : x
2. Step 2: Convert to fraction form
   43,238.52/64,836.18 = 19,845/x
3. Step 3: Cross multiply
   43,238.52x = 64,836.18 × 19,845
4. Step 4: Simplify right side
   43,238.52x = 1,286,673,992.10
5. Step 5: Solve for x
   x = 1,286,673,992.10/43,238.52
6. Step 6: Final answer
   x = 29,757.59