Finding the Fourth Proportional to 52,002.23, 71,762.63 and 28,128.69

Step by Step Solution

1. Step 1: Write the proportion equation
   52,002.23 : 71,762.63 = 28,128.69 : x
2. Step 2: Convert to fraction form
   52,002.23/71,762.63 = 28,128.69/x
3. Step 3: Cross multiply
   52,002.23x = 71,762.63 × 28,128.69
4. Step 4: Simplify right side
   52,002.23x = 2,018,588,632.21
5. Step 5: Solve for x
   x = 2,018,588,632.21/52,002.23
6. Step 6: Final answer
   x = 38,817.35