Finding the Fourth Proportional to 31,441.78, 47,152.64 and 10,377.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,441.78 : 47,152.64 = 10,377.91 : x
2. Step 2: Convert to fraction form
   31,441.78/47,152.64 = 10,377.91/x
3. Step 3: Cross multiply
   31,441.78x = 47,152.64 × 10,377.91
4. Step 4: Simplify right side
   31,441.78x = 489,345,618.42
5. Step 5: Solve for x
   x = 489,345,618.42/31,441.78
6. Step 6: Final answer
   x = 15,563.55