Finding the Fourth Proportional to 42,386.33, 63,580.10 and 12,804.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,386.33 : 63,580.10 = 12,804.42 : x
2. Step 2: Convert to fraction form
   42,386.33/63,580.10 = 12,804.42/x
3. Step 3: Cross multiply
   42,386.33x = 63,580.10 × 12,804.42
4. Step 4: Simplify right side
   42,386.33x = 814,106,304.04
5. Step 5: Solve for x
   x = 814,106,304.04/42,386.33
6. Step 6: Final answer
   x = 19,206.81