Finding the Fourth Proportional to 31,739.86, 47,610.15 and 10,958.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,739.86 : 47,610.15 = 10,958.50 : x
2. Step 2: Convert to fraction form
   31,739.86/47,610.15 = 10,958.50/x
3. Step 3: Cross multiply
   31,739.86x = 47,610.15 × 10,958.50
4. Step 4: Simplify right side
   31,739.86x = 521,735,828.78
5. Step 5: Solve for x
   x = 521,735,828.78/31,739.86
6. Step 6: Final answer
   x = 16,437.87