Finding the Fourth Proportional to 35,630.72, 49,170 and 19,715.28

Step by Step Solution

1. Step 1: Write the proportion equation
   35,630.72 : 49,170 = 19,715.28 : x
2. Step 2: Convert to fraction form
   35,630.72/49,170 = 19,715.28/x
3. Step 3: Cross multiply
   35,630.72x = 49,170 × 19,715.28
4. Step 4: Simplify right side
   35,630.72x = 969,400,317.60
5. Step 5: Solve for x
   x = 969,400,317.60/35,630.72
6. Step 6: Final answer
   x = 27,206.87