Finding the Fourth Proportional to 28,499.33, 42,753.59 and 8,777.88

Step by Step Solution

1. Step 1: Write the proportion equation
   28,499.33 : 42,753.59 = 8,777.88 : x
2. Step 2: Convert to fraction form
   28,499.33/42,753.59 = 8,777.88/x
3. Step 3: Cross multiply
   28,499.33x = 42,753.59 × 8,777.88
4. Step 4: Simplify right side
   28,499.33x = 375,285,871.62
5. Step 5: Solve for x
   x = 375,285,871.62/28,499.33
6. Step 6: Final answer
   x = 13,168.24