Finding the Fourth Proportional to 31,510.15, 43,470.34 and 18,756.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,510.15 : 43,470.34 = 18,756.18 : x
2. Step 2: Convert to fraction form
   31,510.15/43,470.34 = 18,756.18/x
3. Step 3: Cross multiply
   31,510.15x = 43,470.34 × 18,756.18
4. Step 4: Simplify right side
   31,510.15x = 815,337,521.70
5. Step 5: Solve for x
   x = 815,337,521.70/31,510.15
6. Step 6: Final answer
   x = 25,875.39