Finding the Fourth Proportional to 31,789.37, 43,877.30 and 18,368.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,789.37 : 43,877.30 = 18,368.42 : x
2. Step 2: Convert to fraction form
   31,789.37/43,877.30 = 18,368.42/x
3. Step 3: Cross multiply
   31,789.37x = 43,877.30 × 18,368.42
4. Step 4: Simplify right side
   31,789.37x = 805,956,583.02
5. Step 5: Solve for x
   x = 805,956,583.02/31,789.37
6. Step 6: Final answer
   x = 25,353.02