Finding the Fourth Proportional to 31,576.64, 43,580.56 and 19,643.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,576.64 : 43,580.56 = 19,643.82 : x
2. Step 2: Convert to fraction form
   31,576.64/43,580.56 = 19,643.82/x
3. Step 3: Cross multiply
   31,576.64x = 43,580.56 × 19,643.82
4. Step 4: Simplify right side
   31,576.64x = 856,088,676.14
5. Step 5: Solve for x
   x = 856,088,676.14/31,576.64
6. Step 6: Final answer
   x = 27,111.46