Finding the Fourth Proportional to 31,408, 43,340.48 and 17,976.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,408 : 43,340.48 = 17,976.18 : x
2. Step 2: Convert to fraction form
   31,408/43,340.48 = 17,976.18/x
3. Step 3: Cross multiply
   31,408x = 43,340.48 × 17,976.18
4. Step 4: Simplify right side
   31,408x = 779,096,269.77
5. Step 5: Solve for x
   x = 779,096,269.77/31,408
6. Step 6: Final answer
   x = 24,805.66