Finding the Fourth Proportional to 34,632.72, 47,782.56 and 21,189.72

Step by Step Solution

1. Step 1: Write the proportion equation
   34,632.72 : 47,782.56 = 21,189.72 : x
2. Step 2: Convert to fraction form
   34,632.72/47,782.56 = 21,189.72/x
3. Step 3: Cross multiply
   34,632.72x = 47,782.56 × 21,189.72
4. Step 4: Simplify right side
   34,632.72x = 1,012,499,067.28
5. Step 5: Solve for x
   x = 1,012,499,067.28/34,632.72
6. Step 6: Final answer
   x = 29,235.33