Finding the Fourth Proportional to 28,066.80, 42,099.84 and 8,076.82

Step by Step Solution

1. Step 1: Write the proportion equation
   28,066.80 : 42,099.84 = 8,076.82 : x
2. Step 2: Convert to fraction form
   28,066.80/42,099.84 = 8,076.82/x
3. Step 3: Cross multiply
   28,066.80x = 42,099.84 × 8,076.82
4. Step 4: Simplify right side
   28,066.80x = 340,032,829.71
5. Step 5: Solve for x
   x = 340,032,829.71/28,066.80
6. Step 6: Final answer
   x = 12,115.13