Finding the Fourth Proportional to 42,382.09, 63,584.61 and 12,800.89

Step by Step Solution

1. Step 1: Write the proportion equation
   42,382.09 : 63,584.61 = 12,800.89 : x
2. Step 2: Convert to fraction form
   42,382.09/63,584.61 = 12,800.89/x
3. Step 3: Cross multiply
   42,382.09x = 63,584.61 × 12,800.89
4. Step 4: Simplify right side
   42,382.09x = 813,939,598.30
5. Step 5: Solve for x
   x = 813,939,598.30/42,382.09
6. Step 6: Final answer
   x = 19,204.80