Finding the Fourth Proportional to 42,131.09, 63,196.43 and 10,966.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,131.09 : 63,196.43 = 10,966.34 : x
2. Step 2: Convert to fraction form
   42,131.09/63,196.43 = 10,966.34/x
3. Step 3: Cross multiply
   42,131.09x = 63,196.43 × 10,966.34
4. Step 4: Simplify right side
   42,131.09x = 693,033,167.35
5. Step 5: Solve for x
   x = 693,033,167.35/42,131.09
6. Step 6: Final answer
   x = 16,449.45