Finding the Fourth Proportional to 31,980.72, 44,120.79 and 18,549.57

Step by Step Solution

1. Step 1: Write the proportion equation
   31,980.72 : 44,120.79 = 18,549.57 : x
2. Step 2: Convert to fraction form
   31,980.72/44,120.79 = 18,549.57/x
3. Step 3: Cross multiply
   31,980.72x = 44,120.79 × 18,549.57
4. Step 4: Simplify right side
   31,980.72x = 818,421,682.56
5. Step 5: Solve for x
   x = 818,421,682.56/31,980.72
6. Step 6: Final answer
   x = 25,591.10