Finding the Fourth Proportional to 31,007.08, 42,783.46 and 18,434.92

Step by Step Solution

1. Step 1: Write the proportion equation
   31,007.08 : 42,783.46 = 18,434.92 : x
2. Step 2: Convert to fraction form
   31,007.08/42,783.46 = 18,434.92/x
3. Step 3: Cross multiply
   31,007.08x = 42,783.46 × 18,434.92
4. Step 4: Simplify right side
   31,007.08x = 788,709,662.42
5. Step 5: Solve for x
   x = 788,709,662.42/31,007.08
6. Step 6: Final answer
   x = 25,436.44