Finding the Fourth Proportional to 42,221.41, 63,332.17 and 10,631.47

Step by Step Solution

1. Step 1: Write the proportion equation
   42,221.41 : 63,332.17 = 10,631.47 : x
2. Step 2: Convert to fraction form
   42,221.41/63,332.17 = 10,631.47/x
3. Step 3: Cross multiply
   42,221.41x = 63,332.17 × 10,631.47
4. Step 4: Simplify right side
   42,221.41x = 673,314,065.39
5. Step 5: Solve for x
   x = 673,314,065.39/42,221.41
6. Step 6: Final answer
   x = 15,947.22