Finding the Fourth Proportional to 52,439.69, 72,366.59 and 28,566.29

Step by Step Solution

1. Step 1: Write the proportion equation
   52,439.69 : 72,366.59 = 28,566.29 : x
2. Step 2: Convert to fraction form
   52,439.69/72,366.59 = 28,566.29/x
3. Step 3: Cross multiply
   52,439.69x = 72,366.59 × 28,566.29
4. Step 4: Simplify right side
   52,439.69x = 2,067,244,491.59
5. Step 5: Solve for x
   x = 2,067,244,491.59/52,439.69
6. Step 6: Final answer
   x = 39,421.38