Finding the Fourth Proportional to 31,155.44, 42,994.50 and 17,008.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,155.44 : 42,994.50 = 17,008.28 : x
2. Step 2: Convert to fraction form
   31,155.44/42,994.50 = 17,008.28/x
3. Step 3: Cross multiply
   31,155.44x = 42,994.50 × 17,008.28
4. Step 4: Simplify right side
   31,155.44x = 731,262,494.46
5. Step 5: Solve for x
   x = 731,262,494.46/31,155.44
6. Step 6: Final answer
   x = 23,471.42