Finding the Fourth Proportional to 28,499.83, 42,756.42 and 8,777.95

Step by Step Solution

1. Step 1: Write the proportion equation
   28,499.83 : 42,756.42 = 8,777.95 : x
2. Step 2: Convert to fraction form
   28,499.83/42,756.42 = 8,777.95/x
3. Step 3: Cross multiply
   28,499.83x = 42,756.42 × 8,777.95
4. Step 4: Simplify right side
   28,499.83x = 375,313,716.94
5. Step 5: Solve for x
   x = 375,313,716.94/28,499.83
6. Step 6: Final answer
   x = 13,168.98