Finding the Fourth Proportional to 52,002.05, 71,762.76 and 28,128.65

Step by Step Solution

1. Step 1: Write the proportion equation
   52,002.05 : 71,762.76 = 28,128.65 : x
2. Step 2: Convert to fraction form
   52,002.05/71,762.76 = 28,128.65/x
3. Step 3: Cross multiply
   52,002.05x = 71,762.76 × 28,128.65
4. Step 4: Simplify right side
   52,002.05x = 2,018,589,200.26
5. Step 5: Solve for x
   x = 2,018,589,200.26/52,002.05
6. Step 6: Final answer
   x = 38,817.50