Finding the Fourth Proportional to 52,738.69, 72,779.55 and 28,866.91

Step by Step Solution

1. Step 1: Write the proportion equation
   52,738.69 : 72,779.55 = 28,866.91 : x
2. Step 2: Convert to fraction form
   52,738.69/72,779.55 = 28,866.91/x
3. Step 3: Cross multiply
   52,738.69x = 72,779.55 × 28,866.91
4. Step 4: Simplify right side
   52,738.69x = 2,100,920,719.69
5. Step 5: Solve for x
   x = 2,100,920,719.69/52,738.69
6. Step 6: Final answer
   x = 39,836.42