Finding the Fourth Proportional to 31,631.06, 43,686.72 and 21,541.97

Step by Step Solution

1. Step 1: Write the proportion equation
   31,631.06 : 43,686.72 = 21,541.97 : x
2. Step 2: Convert to fraction form
   31,631.06/43,686.72 = 21,541.97/x
3. Step 3: Cross multiply
   31,631.06x = 43,686.72 × 21,541.97
4. Step 4: Simplify right side
   31,631.06x = 941,097,793.20
5. Step 5: Solve for x
   x = 941,097,793.20/31,631.06
6. Step 6: Final answer
   x = 29,752.34