Finding the Fourth Proportional to 31,790.46, 43,870.41 and 17,643

Step by Step Solution

1. Step 1: Write the proportion equation
   31,790.46 : 43,870.41 = 17,643 : x
2. Step 2: Convert to fraction form
   31,790.46/43,870.41 = 17,643/x
3. Step 3: Cross multiply
   31,790.46x = 43,870.41 × 17,643
4. Step 4: Simplify right side
   31,790.46x = 774,005,643.63
5. Step 5: Solve for x
   x = 774,005,643.63/31,790.46
6. Step 6: Final answer
   x = 24,347.10