Finding the Fourth Proportional to 13,736.71, 20,608.18 and 4,971.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,736.71 : 20,608.18 = 4,971.62 : x
2. Step 2: Convert to fraction form
   13,736.71/20,608.18 = 4,971.62/x
3. Step 3: Cross multiply
   13,736.71x = 20,608.18 × 4,971.62
4. Step 4: Simplify right side
   13,736.71x = 102,456,039.85
5. Step 5: Solve for x
   x = 102,456,039.85/13,736.71
6. Step 6: Final answer
   x = 7,458.56