Finding the Fourth Proportional to 31,790.58, 43,870.59 and 17,643.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,790.58 : 43,870.59 = 17,643.12 : x
2. Step 2: Convert to fraction form
   31,790.58/43,870.59 = 17,643.12/x
3. Step 3: Cross multiply
   31,790.58x = 43,870.59 × 17,643.12
4. Step 4: Simplify right side
   31,790.58x = 774,014,083.84
5. Step 5: Solve for x
   x = 774,014,083.84/31,790.58
6. Step 6: Final answer
   x = 24,347.28