Finding the Fourth Proportional to 42,150.75, 63,229.77 and 10,986

Step by Step Solution

1. Step 1: Write the proportion equation
   42,150.75 : 63,229.77 = 10,986 : x
2. Step 2: Convert to fraction form
   42,150.75/63,229.77 = 10,986/x
3. Step 3: Cross multiply
   42,150.75x = 63,229.77 × 10,986
4. Step 4: Simplify right side
   42,150.75x = 694,642,253.22
5. Step 5: Solve for x
   x = 694,642,253.22/42,150.75
6. Step 6: Final answer
   x = 16,479.95