Finding the Fourth Proportional to 31,917.06, 47,870.58 and 12,191.24

Step by Step Solution

1. Step 1: Write the proportion equation
   31,917.06 : 47,870.58 = 12,191.24 : x
2. Step 2: Convert to fraction form
   31,917.06/47,870.58 = 12,191.24/x
3. Step 3: Cross multiply
   31,917.06x = 47,870.58 × 12,191.24
4. Step 4: Simplify right side
   31,917.06x = 583,601,490.37
5. Step 5: Solve for x
   x = 583,601,490.37/31,917.06
6. Step 6: Final answer
   x = 18,284.94