Finding the Fourth Proportional to 35,976.84, 53,969.16 and 13,809

Step by Step Solution

1. Step 1: Write the proportion equation
   35,976.84 : 53,969.16 = 13,809 : x
2. Step 2: Convert to fraction form
   35,976.84/53,969.16 = 13,809/x
3. Step 3: Cross multiply
   35,976.84x = 53,969.16 × 13,809
4. Step 4: Simplify right side
   35,976.84x = 745,260,130.44
5. Step 5: Solve for x
   x = 745,260,130.44/35,976.84
6. Step 6: Final answer
   x = 20,715.00