Finding the Fourth Proportional to 31,422.69, 47,128.65 and 10,362.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,422.69 : 47,128.65 = 10,362.96 : x
2. Step 2: Convert to fraction form
   31,422.69/47,128.65 = 10,362.96/x
3. Step 3: Cross multiply
   31,422.69x = 47,128.65 × 10,362.96
4. Step 4: Simplify right side
   31,422.69x = 488,392,314.80
5. Step 5: Solve for x
   x = 488,392,314.80/31,422.69
6. Step 6: Final answer
   x = 15,542.66