Finding the Fourth Proportional to 31,793.94, 47,667.87 and 18,643.86

Step by Step Solution

1. Step 1: Write the proportion equation
   31,793.94 : 47,667.87 = 18,643.86 : x
2. Step 2: Convert to fraction form
   31,793.94/47,667.87 = 18,643.86/x
3. Step 3: Cross multiply
   31,793.94x = 47,667.87 × 18,643.86
4. Step 4: Simplify right side
   31,793.94x = 888,713,094.78
5. Step 5: Solve for x
   x = 888,713,094.78/31,793.94
6. Step 6: Final answer
   x = 27,952.28