Finding the Fourth Proportional to 31,734.57, 47,605.91 and 10,665.57

Step by Step Solution

1. Step 1: Write the proportion equation
   31,734.57 : 47,605.91 = 10,665.57 : x
2. Step 2: Convert to fraction form
   31,734.57/47,605.91 = 10,665.57/x
3. Step 3: Cross multiply
   31,734.57x = 47,605.91 × 10,665.57
4. Step 4: Simplify right side
   31,734.57x = 507,744,112.19
5. Step 5: Solve for x
   x = 507,744,112.19/31,734.57
6. Step 6: Final answer
   x = 15,999.72