Finding the Fourth Proportional to 31,362.69, 47,039.94 and 15,561.62

Step by Step Solution

1. Step 1: Write the proportion equation
   31,362.69 : 47,039.94 = 15,561.62 : x
2. Step 2: Convert to fraction form
   31,362.69/47,039.94 = 15,561.62/x
3. Step 3: Cross multiply
   31,362.69x = 47,039.94 × 15,561.62
4. Step 4: Simplify right side
   31,362.69x = 732,017,612.30
5. Step 5: Solve for x
   x = 732,017,612.30/31,362.69
6. Step 6: Final answer
   x = 23,340.39