Finding the Fourth Proportional to 31,779.72, 43,837.78 and 19,822.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,779.72 : 43,837.78 = 19,822.30 : x
2. Step 2: Convert to fraction form
   31,779.72/43,837.78 = 19,822.30/x
3. Step 3: Cross multiply
   31,779.72x = 43,837.78 × 19,822.30
4. Step 4: Simplify right side
   31,779.72x = 868,965,626.49
5. Step 5: Solve for x
   x = 868,965,626.49/31,779.72
6. Step 6: Final answer
   x = 27,343.40