Finding the Fourth Proportional to 31,779.37, 47,669.33 and 8,086.95

Step by Step Solution

1. Step 1: Write the proportion equation
   31,779.37 : 47,669.33 = 8,086.95 : x
2. Step 2: Convert to fraction form
   31,779.37/47,669.33 = 8,086.95/x
3. Step 3: Cross multiply
   31,779.37x = 47,669.33 × 8,086.95
4. Step 4: Simplify right side
   31,779.37x = 385,499,508.46
5. Step 5: Solve for x
   x = 385,499,508.46/31,779.37
6. Step 6: Final answer
   x = 12,130.50