Finding the Fourth Proportional to 31,581.50, 43,577.80 and 18,153.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,581.50 : 43,577.80 = 18,153.32 : x
2. Step 2: Convert to fraction form
   31,581.50/43,577.80 = 18,153.32/x
3. Step 3: Cross multiply
   31,581.50x = 43,577.80 × 18,153.32
4. Step 4: Simplify right side
   31,581.50x = 791,081,485.02
5. Step 5: Solve for x
   x = 791,081,485.02/31,581.50
6. Step 6: Final answer
   x = 25,048.89