Finding the Fourth Proportional to 31,767.50, 43,839.35 and 17,620.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,767.50 : 43,839.35 = 17,620.38 : x
2. Step 2: Convert to fraction form
   31,767.50/43,839.35 = 17,620.38/x
3. Step 3: Cross multiply
   31,767.50x = 43,839.35 × 17,620.38
4. Step 4: Simplify right side
   31,767.50x = 772,466,005.95
5. Step 5: Solve for x
   x = 772,466,005.95/31,767.50
6. Step 6: Final answer
   x = 24,316.24