Finding the Fourth Proportional to 35,721.60, 49,298.59 and 19,809.15

Step by Step Solution

1. Step 1: Write the proportion equation
   35,721.60 : 49,298.59 = 19,809.15 : x
2. Step 2: Convert to fraction form
   35,721.60/49,298.59 = 19,809.15/x
3. Step 3: Cross multiply
   35,721.60x = 49,298.59 × 19,809.15
4. Step 4: Simplify right side
   35,721.60x = 976,563,164.10
5. Step 5: Solve for x
   x = 976,563,164.10/35,721.60
6. Step 6: Final answer
   x = 27,338.17