Finding the Fourth Proportional to 34,789.50, 52,181.42 and 13,728.69

Step by Step Solution

1. Step 1: Write the proportion equation
   34,789.50 : 52,181.42 = 13,728.69 : x
2. Step 2: Convert to fraction form
   34,789.50/52,181.42 = 13,728.69/x
3. Step 3: Cross multiply
   34,789.50x = 52,181.42 × 13,728.69
4. Step 4: Simplify right side
   34,789.50x = 716,382,470.30
5. Step 5: Solve for x
   x = 716,382,470.30/34,789.50
6. Step 6: Final answer
   x = 20,591.92