Finding the Fourth Proportional to 42,019.75, 63,030.84 and 10,855

Step by Step Solution

1. Step 1: Write the proportion equation
   42,019.75 : 63,030.84 = 10,855 : x
2. Step 2: Convert to fraction form
   42,019.75/63,030.84 = 10,855/x
3. Step 3: Cross multiply
   42,019.75x = 63,030.84 × 10,855
4. Step 4: Simplify right side
   42,019.75x = 684,199,768.20
5. Step 5: Solve for x
   x = 684,199,768.20/42,019.75
6. Step 6: Final answer
   x = 16,282.81