Finding the Fourth Proportional to 42,628.28, 63,942.55 and 13,046.00

Step by Step Solution

1. Step 1: Write the proportion equation
   42,628.28 : 63,942.55 = 13,046.00 : x
2. Step 2: Convert to fraction form
   42,628.28/63,942.55 = 13,046.00/x
3. Step 3: Cross multiply
   42,628.28x = 63,942.55 × 13,046.00
4. Step 4: Simplify right side
   42,628.28x = 834,194,154.97
5. Step 5: Solve for x
   x = 834,194,154.97/42,628.28
6. Step 6: Final answer
   x = 19,569.03