Finding the Fourth Proportional to 31,808.58, 47,708.01 and 8,434.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,808.58 : 47,708.01 = 8,434.82 : x
2. Step 2: Convert to fraction form
   31,808.58/47,708.01 = 8,434.82/x
3. Step 3: Cross multiply
   31,808.58x = 47,708.01 × 8,434.82
4. Step 4: Simplify right side
   31,808.58x = 402,408,238.37
5. Step 5: Solve for x
   x = 402,408,238.37/31,808.58
6. Step 6: Final answer
   x = 12,650.93