Finding the Fourth Proportional to 31,443.47, 47,159.61 and 10,383.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,443.47 : 47,159.61 = 10,383.80 : x
2. Step 2: Convert to fraction form
   31,443.47/47,159.61 = 10,383.80/x
3. Step 3: Cross multiply
   31,443.47x = 47,159.61 × 10,383.80
4. Step 4: Simplify right side
   31,443.47x = 489,695,958.32
5. Step 5: Solve for x
   x = 489,695,958.32/31,443.47
6. Step 6: Final answer
   x = 15,573.85