Finding the Fourth Proportional to 31,667.10, 43,697.26 and 19,731.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,667.10 : 43,697.26 = 19,731.76 : x
2. Step 2: Convert to fraction form
   31,667.10/43,697.26 = 19,731.76/x
3. Step 3: Cross multiply
   31,667.10x = 43,697.26 × 19,731.76
4. Step 4: Simplify right side
   31,667.10x = 862,223,846.98
5. Step 5: Solve for x
   x = 862,223,846.98/31,667.10
6. Step 6: Final answer
   x = 27,227.75