Finding the Fourth Proportional to 28,273.10, 42,430.71 and 10,777.10

Step by Step Solution

1. Step 1: Write the proportion equation
   28,273.10 : 42,430.71 = 10,777.10 : x
2. Step 2: Convert to fraction form
   28,273.10/42,430.71 = 10,777.10/x
3. Step 3: Cross multiply
   28,273.10x = 42,430.71 × 10,777.10
4. Step 4: Simplify right side
   28,273.10x = 457,280,004.74
5. Step 5: Solve for x
   x = 457,280,004.74/28,273.10
6. Step 6: Final answer
   x = 16,173.68