Finding the Fourth Proportional to 31,444.47, 47,172.49 and 10,385.93

Step by Step Solution

1. Step 1: Write the proportion equation
   31,444.47 : 47,172.49 = 10,385.93 : x
2. Step 2: Convert to fraction form
   31,444.47/47,172.49 = 10,385.93/x
3. Step 3: Cross multiply
   31,444.47x = 47,172.49 × 10,385.93
4. Step 4: Simplify right side
   31,444.47x = 489,930,271.03
5. Step 5: Solve for x
   x = 489,930,271.03/31,444.47
6. Step 6: Final answer
   x = 15,580.81