Finding the Fourth Proportional to 31,422.49, 47,123.71 and 10,358.60

Step by Step Solution

1. Step 1: Write the proportion equation
   31,422.49 : 47,123.71 = 10,358.60 : x
2. Step 2: Convert to fraction form
   31,422.49/47,123.71 = 10,358.60/x
3. Step 3: Cross multiply
   31,422.49x = 47,123.71 × 10,358.60
4. Step 4: Simplify right side
   31,422.49x = 488,135,662.41
5. Step 5: Solve for x
   x = 488,135,662.41/31,422.49
6. Step 6: Final answer
   x = 15,534.60