Finding the Fourth Proportional to 42,129.27, 63,198.05 and 10,964.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,129.27 : 63,198.05 = 10,964.52 : x
2. Step 2: Convert to fraction form
   42,129.27/63,198.05 = 10,964.52/x
3. Step 3: Cross multiply
   42,129.27x = 63,198.05 × 10,964.52
4. Step 4: Simplify right side
   42,129.27x = 692,936,228.36
5. Step 5: Solve for x
   x = 692,936,228.36/42,129.27
6. Step 6: Final answer
   x = 16,447.86