Finding the Fourth Proportional to 28,567.56, 42,856.56 and 8,844.78

Step by Step Solution

1. Step 1: Write the proportion equation
   28,567.56 : 42,856.56 = 8,844.78 : x
2. Step 2: Convert to fraction form
   28,567.56/42,856.56 = 8,844.78/x
3. Step 3: Cross multiply
   28,567.56x = 42,856.56 × 8,844.78
4. Step 4: Simplify right side
   28,567.56x = 379,056,844.76
5. Step 5: Solve for x
   x = 379,056,844.76/28,567.56
6. Step 6: Final answer
   x = 13,268.79