Finding the Fourth Proportional to 42,476.42, 63,713.19 and 10,886.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,476.42 : 63,713.19 = 10,886.80 : x
2. Step 2: Convert to fraction form
   42,476.42/63,713.19 = 10,886.80/x
3. Step 3: Cross multiply
   42,476.42x = 63,713.19 × 10,886.80
4. Step 4: Simplify right side
   42,476.42x = 693,632,383.89
5. Step 5: Solve for x
   x = 693,632,383.89/42,476.42
6. Step 6: Final answer
   x = 16,329.82