Finding the Fourth Proportional to 31,605.30, 43,632.81 and 21,548.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,605.30 : 43,632.81 = 21,548.52 : x
2. Step 2: Convert to fraction form
   31,605.30/43,632.81 = 21,548.52/x
3. Step 3: Cross multiply
   31,605.30x = 43,632.81 × 21,548.52
4. Step 4: Simplify right side
   31,605.30x = 940,222,478.94
5. Step 5: Solve for x
   x = 940,222,478.94/31,605.30
6. Step 6: Final answer
   x = 29,748.89