Finding the Fourth Proportional to 36,698.16, 50,643.72 and 19,931.16

Step by Step Solution

1. Step 1: Write the proportion equation
   36,698.16 : 50,643.72 = 19,931.16 : x
2. Step 2: Convert to fraction form
   36,698.16/50,643.72 = 19,931.16/x
3. Step 3: Cross multiply
   36,698.16x = 50,643.72 × 19,931.16
4. Step 4: Simplify right side
   36,698.16x = 1,009,388,086.32
5. Step 5: Solve for x
   x = 1,009,388,086.32/36,698.16
6. Step 6: Final answer
   x = 27,505.14