Finding the Fourth Proportional to 35,227.89, 48,629.70 and 21,078

Step by Step Solution

1. Step 1: Write the proportion equation
   35,227.89 : 48,629.70 = 21,078 : x
2. Step 2: Convert to fraction form
   35,227.89/48,629.70 = 21,078/x
3. Step 3: Cross multiply
   35,227.89x = 48,629.70 × 21,078
4. Step 4: Simplify right side
   35,227.89x = 1,025,016,816.60
5. Step 5: Solve for x
   x = 1,025,016,816.60/35,227.89
6. Step 6: Final answer
   x = 29,096.74