Finding the Fourth Proportional to 31,131.04, 42,954.96 and 18,556.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,131.04 : 42,954.96 = 18,556.96 : x
2. Step 2: Convert to fraction form
   31,131.04/42,954.96 = 18,556.96/x
3. Step 3: Cross multiply
   31,131.04x = 42,954.96 × 18,556.96
4. Step 4: Simplify right side
   31,131.04x = 797,113,474.52
5. Step 5: Solve for x
   x = 797,113,474.52/31,131.04
6. Step 6: Final answer
   x = 25,605.10