Finding the Fourth Proportional to 31,450.86, 47,181.15 and 10,669.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,450.86 : 47,181.15 = 10,669.50 : x
2. Step 2: Convert to fraction form
   31,450.86/47,181.15 = 10,669.50/x
3. Step 3: Cross multiply
   31,450.86x = 47,181.15 × 10,669.50
4. Step 4: Simplify right side
   31,450.86x = 503,399,279.93
5. Step 5: Solve for x
   x = 503,399,279.93/31,450.86
6. Step 6: Final answer
   x = 16,005.90