Finding the Fourth Proportional to 31,664.13, 43,692.71 and 17,515.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,664.13 : 43,692.71 = 17,515.05 : x
2. Step 2: Convert to fraction form
   31,664.13/43,692.71 = 17,515.05/x
3. Step 3: Cross multiply
   31,664.13x = 43,692.71 × 17,515.05
4. Step 4: Simplify right side
   31,664.13x = 765,280,000.29
5. Step 5: Solve for x
   x = 765,280,000.29/31,664.13
6. Step 6: Final answer
   x = 24,168.67